Vulnerabilities > CVE-2015-0282 - Cryptographic Issues vulnerability in GNU Gnutls
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
GnuTLS before 3.1.0 does not verify that the RSA PKCS #1 signature algorithm matches the signature algorithm in the certificate, which allows remote attackers to conduct downgrade attacks via unspecified vectors.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Signature Spoofing by Key Recreation An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Nessus
NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2015-1457.NASL description From Red Hat Security Advisory 2015:1457 : Updated gnutls packages that fix three security issues and one bug are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS). It was found that GnuTLS did not check activation and expiration dates of CA certificates. This could cause an application using GnuTLS to incorrectly accept a certificate as valid when its issuing CA is already expired. (CVE-2014-8155) It was found that GnuTLS did not verify whether a hashing algorithm listed in a signature matched the hashing algorithm listed in the certificate. An attacker could create a certificate that used a different hashing algorithm than it claimed, possibly causing GnuTLS to use an insecure, disallowed hashing algorithm during certificate verification. (CVE-2015-0282) It was discovered that GnuTLS did not check if all sections of X.509 certificates indicate the same signature algorithm. This flaw, in combination with a different flaw, could possibly lead to a bypass of the certificate signature check. (CVE-2015-0294) The CVE-2014-8155 issue was discovered by Marcel Kolaja of Red Hat. The CVE-2015-0282 and CVE-2015-0294 issues were discovered by Nikos Mavrogiannopoulos of the Red Hat Security Technologies Team. This update also fixes the following bug : * Previously, under certain circumstances, the certtool utility could generate X.509 certificates which contained a negative modulus. Consequently, such certificates could have interoperation problems with the software using them. The bug has been fixed, and certtool no longer generates X.509 certificates containing a negative modulus. (BZ#1036385) Users of gnutls are advised to upgrade to these updated packages, which contain backported patches to correct these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 85109 published 2015-07-30 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85109 title Oracle Linux 6 : gnutls (ELSA-2015-1457) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2540-1.NASL description It was discovered that GnuTLS did not perform date and time checks on CA certificates, contrary to expectations. This issue only affected Ubuntu 10.04 LTS. (CVE-2014-8155) Nikos Mavrogiannopoulos discovered that GnuTLS incorrectly verified that signature algorithms matched. A remote attacker could possibly use this issue to downgrade to a disallowed algorithm. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-0282) It was discovered that GnuTLS incorrectly verified certificate algorithms. A remote attacker could possibly use this issue to downgrade to a disallowed algorithm. (CVE-2015-0294). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 82024 published 2015-03-24 reporter Ubuntu Security Notice (C) 2015-2020 Canonical, Inc. / NASL script (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/82024 title Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : gnutls26, gnutls28 vulnerabilities (USN-2540-1) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2015-1457.NASL description Updated gnutls packages that fix three security issues and one bug are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS). It was found that GnuTLS did not check activation and expiration dates of CA certificates. This could cause an application using GnuTLS to incorrectly accept a certificate as valid when its issuing CA is already expired. (CVE-2014-8155) It was found that GnuTLS did not verify whether a hashing algorithm listed in a signature matched the hashing algorithm listed in the certificate. An attacker could create a certificate that used a different hashing algorithm than it claimed, possibly causing GnuTLS to use an insecure, disallowed hashing algorithm during certificate verification. (CVE-2015-0282) It was discovered that GnuTLS did not check if all sections of X.509 certificates indicate the same signature algorithm. This flaw, in combination with a different flaw, could possibly lead to a bypass of the certificate signature check. (CVE-2015-0294) The CVE-2014-8155 issue was discovered by Marcel Kolaja of Red Hat. The CVE-2015-0282 and CVE-2015-0294 issues were discovered by Nikos Mavrogiannopoulos of the Red Hat Security Technologies Team. This update also fixes the following bug : * Previously, under certain circumstances, the certtool utility could generate X.509 certificates which contained a negative modulus. Consequently, such certificates could have interoperation problems with the software using them. The bug has been fixed, and certtool no longer generates X.509 certificates containing a negative modulus. (BZ#1036385) Users of gnutls are advised to upgrade to these updated packages, which contain backported patches to correct these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 85023 published 2015-07-28 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85023 title CentOS 6 : gnutls (CESA-2015:1457) NASL family Scientific Linux Local Security Checks NASL id SL_20150722_GNUTLS_ON_SL6_X.NASL description It was found that GnuTLS did not check activation and expiration dates of CA certificates. This could cause an application using GnuTLS to incorrectly accept a certificate as valid when its issuing CA is already expired. (CVE-2014-8155) It was found that GnuTLS did not verify whether a hashing algorithm listed in a signature matched the hashing algorithm listed in the certificate. An attacker could create a certificate that used a different hashing algorithm than it claimed, possibly causing GnuTLS to use an insecure, disallowed hashing algorithm during certificate verification. (CVE-2015-0282) It was discovered that GnuTLS did not check if all sections of X.509 certificates indicate the same signature algorithm. This flaw, in combination with a different flaw, could possibly lead to a bypass of the certificate signature check. (CVE-2015-0294) The CVE-2014-8155 issue was discovered by Marcel Kolaja of Red Hat. The CVE-2015-0282 and CVE-2015-0294 issues were discovered by Nikos Mavrogiannopoulos of the Red Hat Security Technologies Team. This update also fixes the following bug : - Previously, under certain circumstances, the certtool utility could generate X.509 certificates which contained a negative modulus. Consequently, such certificates could have interoperation problems with the software using them. The bug has been fixed, and certtool no longer generates X.509 certificates containing a negative modulus. last seen 2020-03-18 modified 2015-08-04 plugin id 85193 published 2015-08-04 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85193 title Scientific Linux Security Update : gnutls on SL6.x i386/x86_64 (20150722) NASL family SuSE Local Security Checks NASL id SUSE_11_GNUTLS-150325.NASL description GnuTLS was updated to fix two security issues : - A certificate algorithm consistency checking issue was fixed, where GnuTLS did not check whether the two signature algorithms match on certificate import. This problem is not deemed to be exploitable currently. (CVE-2015-0294) - GNUTLS-SA-2015-1: GnuTLS did not verify the RSA PKCS #1 signature algorithm to match the signature algorithm in the certificate, leading to a potential downgrade to a disallowed algorithm, such as MD5, without detecting it. (CVE-2015-0282) last seen 2020-06-01 modified 2020-06-02 plugin id 82639 published 2015-04-08 reporter This script is Copyright (C) 2015 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82639 title SuSE 11.3 Security Update : GnuTLS (SAT Patch Number 10536) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2015-1457.NASL description Updated gnutls packages that fix three security issues and one bug are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS). It was found that GnuTLS did not check activation and expiration dates of CA certificates. This could cause an application using GnuTLS to incorrectly accept a certificate as valid when its issuing CA is already expired. (CVE-2014-8155) It was found that GnuTLS did not verify whether a hashing algorithm listed in a signature matched the hashing algorithm listed in the certificate. An attacker could create a certificate that used a different hashing algorithm than it claimed, possibly causing GnuTLS to use an insecure, disallowed hashing algorithm during certificate verification. (CVE-2015-0282) It was discovered that GnuTLS did not check if all sections of X.509 certificates indicate the same signature algorithm. This flaw, in combination with a different flaw, could possibly lead to a bypass of the certificate signature check. (CVE-2015-0294) The CVE-2014-8155 issue was discovered by Marcel Kolaja of Red Hat. The CVE-2015-0282 and CVE-2015-0294 issues were discovered by Nikos Mavrogiannopoulos of the Red Hat Security Technologies Team. This update also fixes the following bug : * Previously, under certain circumstances, the certtool utility could generate X.509 certificates which contained a negative modulus. Consequently, such certificates could have interoperation problems with the software using them. The bug has been fixed, and certtool no longer generates X.509 certificates containing a negative modulus. (BZ#1036385) Users of gnutls are advised to upgrade to these updated packages, which contain backported patches to correct these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 84949 published 2015-07-23 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84949 title RHEL 6 : gnutls (RHSA-2015:1457) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3191.NASL description Multiple vulnerabilities have been discovered in GnuTLS, a library implementing the TLS and SSL protocols. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2015-0282 GnuTLS does not verify the RSA PKCS #1 signature algorithm to match the signature algorithm in the certificate, leading to a potential downgrade to a disallowed algorithm without detecting it. - CVE-2015-0294 It was reported that GnuTLS does not check whether the two signature algorithms match on certificate import. last seen 2020-03-17 modified 2015-03-17 plugin id 81835 published 2015-03-17 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/81835 title Debian DSA-3191-1 : gnutls26 - security update NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2015-575.NASL description It was found that GnuTLS did not check activation and expiration dates of CA certificates. This could cause an application using GnuTLS to incorrectly accept a certificate as valid when its issuing CA is already expired. (CVE-2014-8155) It was found that GnuTLS did not verify whether a hashing algorithm listed in a signature matched the hashing algorithm listed in the certificate. An attacker could create a certificate that used a different hashing algorithm than it claimed, possibly causing GnuTLS to use an insecure, disallowed hashing algorithm during certificate verification. (CVE-2015-0282) It was discovered that GnuTLS did not check if all sections of X.509 certificates indicate the same signature algorithm. This flaw, in combination with a different flaw, could possibly lead to a bypass of the certificate signature check. (CVE-2015-0294) last seen 2020-06-01 modified 2020-06-02 plugin id 85230 published 2015-08-05 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85230 title Amazon Linux AMI : gnutls (ALAS-2015-575) NASL family F5 Networks Local Security Checks NASL id F5_BIGIP_SOL17327.NASL description GnuTLS before 3.1.0 does not verify that the RSA PKCS #1 signature algorithm matches the signature algorithm in the certificate, which allows remote attackers to conduct downgrade attacks via unspecified vectors. (CVE-2015-0282) last seen 2020-06-01 modified 2020-06-02 plugin id 86187 published 2015-09-29 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/86187 title F5 Networks BIG-IP : GnuTLS RSA PKCS signature vulnerability (K17327) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-180.NASL description Multiple vulnerabilities have been discovered in GnuTLS, a library implementing the TLS and SSL protocols. The Common Vulnerabilities and Exposures project identifies the following problems : CVE-2014-8155 Missing date/time checks on CA certificates CVE-2015-0282 GnuTLS does not verify the RSA PKCS #1 signature algorithm to match the signature algorithm in the certificate, leading to a potential downgrade to a disallowed algorithm without detecting it. CVE-2015-0294 GnuTLS does not check whether the two signature algorithms match on certificate import. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2015-03-26 plugin id 82166 published 2015-03-26 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/82166 title Debian DLA-180-1 : gnutls26 security update NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0101.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - fix CVE-2015-0282 (#1198159) - fix CVE-2015-0294 (#1198159) - Corrected value initialization in mpi printing (#1129241) - Check for expiry information in the CA certificates (#1159778) - fix issue with integer padding in certificates and keys (#1036385) - fix session ID length check (#1102025) - fix CVE-2014-0092 (#1069891) - fix CVE-2013-2116 - fix DoS regression in (CVE-2013-1619) upstream patch (#966754) - fix CVE-2013-1619 - fix TLS-CBC timing attack (#908238) last seen 2020-06-01 modified 2020-06-02 plugin id 85142 published 2015-07-31 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/85142 title OracleVM 3.3 : gnutls (OVMSA-2015-0101)
Redhat
| advisories |
| ||||
| rpms |
|