Vulnerabilities > CVE-2015-0291 - Unspecified vulnerability in Openssl 1.0.2
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN openssl
nessus
Summary
The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 4 |
Nessus
NASL family Web Servers NASL id OPENSSL_1_0_2A.NASL description According to its banner, the remote web server uses a version of OpenSSL 1.0.2 prior to 1.0.2a. The OpenSSL library is, therefore, affected by the following vulnerabilities : - A flaw exists in the DTLSv1_listen() function due to state being preserved in the SSL object from one invocation to the next. A remote attacker can exploit this, via crafted DTLS traffic, to cause a segmentation fault, resulting in a denial of service. (CVE-2015-0207) - A flaw exists in the rsa_item_verify() function due to improper implementation of ASN.1 signature verification. A remote attacker can exploit this, via an ASN.1 signature using the RSA PSS algorithm and invalid parameters, to cause a NULL pointer dereference, resulting in a denial of service. (CVE-2015-0208) - A use-after-free condition exists in the d2i_ECPrivateKey() function due to improper processing of malformed EC private key files during import. A remote attacker can exploit this to dereference or free already freed memory, resulting in a denial of service or other unspecified impact. (CVE-2015-0209) - A flaw exists in the ssl3_client_hello() function due to improper validation of a PRNG seed before proceeding with a handshake, resulting in insufficient entropy and predictable output. This allows a man-in-the-middle attacker to defeat cryptographic protection mechanisms via a brute-force attack, resulting in the disclosure of sensitive information. (CVE-2015-0285) - An invalid read flaw exists in the ASN1_TYPE_cmp() function due to improperly performed boolean-type comparisons. A remote attacker can exploit this, via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature, to cause an invalid read operation, resulting in a denial of service. (CVE-2015-0286) - A flaw exists in the ASN1_item_ex_d2i() function due to a failure to reinitialize last seen 2020-06-01 modified 2020-06-02 plugin id 82033 published 2015-03-24 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82033 title OpenSSL 1.0.2 < 1.0.2a Multiple Vulnerabilities NASL family CGI abuses NASL id SPLUNK_618.NASL description According to its version number, the Splunk Enterprise hosted on the remote web server is 5.0.x prior to 5.0.13, 6.0.x prior to 6.0.9, or 6.1.x prior to 6.1.4. It is, therefore, affected by the following vulnerabilities related to the included OpenSSL library : - A security feature bypass vulnerability, known as FREAK (Factoring attack on RSA-EXPORT Keys), exists due to the support of weak EXPORT_RSA cipher suites with keys less than or equal to 512 bits. A man-in-the-middle attacker may be able to downgrade the SSL/TLS connection to use EXPORT_RSA cipher suites which can be factored in a short amount of time, allowing the attacker to intercept and decrypt the traffic. (CVE-2015-0204) - A flaw exists in the DTLSv1_listen() function due to state being preserved in the SSL object from one invocation to the next. A remote attacker can exploit this, via crafted DTLS traffic, to cause a segmentation fault, resulting in a denial of service. (CVE-2015-0207) - A flaw exists in the rsa_item_verify() function due to improper implementation of ASN.1 signature verification. A remote attacker can exploit this, via an ASN.1 signature using the RSA PSS algorithm and invalid parameters, to cause a NULL pointer dereference, resulting in a denial of service. (CVE-2015-0208) - A use-after-free condition exists in the d2i_ECPrivateKey() function due to improper processing of malformed EC private key files during import. A remote attacker can exploit this to dereference or free already freed memory, resulting in a denial of service or other unspecified impact. (CVE-2015-0209) - A flaw exists in the ssl3_client_hello() function due to improper validation of a PRNG seed before proceeding with a handshake, resulting in insufficient entropy and predictable output. This allows a man-in-the-middle attacker to defeat cryptographic protection mechanisms via a brute-force attack, resulting in the disclosure of sensitive information. (CVE-2015-0285) - An invalid read flaw exists in the ASN1_TYPE_cmp() function due to improperly performed boolean-type comparisons. A remote attacker can exploit this, via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature, to cause an invalid read operation, resulting in a denial of service. (CVE-2015-0286) - A flaw exists in the ASN1_item_ex_d2i() function due to a failure to reinitialize last seen 2020-06-01 modified 2020-06-02 plugin id 83992 published 2015-06-04 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/83992 title Splunk Enterprise 5.0.x < 5.0.13 / 6.0.x < 6.0.9 / 6.1.x < 6.1.8 OpenSSL Vulnerabilities (FREAK) NASL family Web Servers NASL id HPSMH_7_5.NASL description According to the web server last seen 2020-06-01 modified 2020-06-02 plugin id 84923 published 2015-07-22 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84923 title HP System Management Homepage 7.3.x / 7.4.x < 7.5.0 Multiple Vulnerabilities (FREAK) NASL family Windows NASL id STUNNEL_5_12.NASL description The version of stunnel installed on the remote host is prior to version 5.12. It is, therefore, affected by the following vulnerabilities in the bundled OpenSSL library : - A flaw exists in the DTLSv1_listen() function due to state information being preserved in the SSL object from one invocation to the next. A remote attacker can exploit this, via crafted DTLS traffic, to cause a segmentation fault, resulting in a denial of service. (CVE-2015-0207) - A flaw exists in the rsa_item_verify() function due to improper implementation of ASN.1 signature verification. A remote attacker can exploit this, via an ASN.1 signature using the RSA PSS algorithm and invalid parameters, to cause a NULL pointer dereference, resulting in a denial of service. (CVE-2015-0208) - A use-after-free error exists in the d2i_ECPrivateKey() function due to improper processing of malformed EC private key files during import. A remote attacker can exploit this to dereference already freed memory, resulting in a denial of service or other unspecified impact. (CVE-2015-0209) - A flaw exists in the ssl3_client_hello() function due to improper validation of a PRNG seed before proceeding with a handshake, resulting in insufficient entropy and predictable output. A man-in-the-middle attacker can exploit this to defeat cryptographic protection mechanisms via a brute-force attack, resulting in the disclosure of sensitive information. (CVE-2015-0285) - An invalid read flaw exists in the ASN1_TYPE_cmp() function due to improperly performed boolean-type comparisons. A remote attacker can exploit this, via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature, to cause an invalid read operation, resulting in a denial of service. (CVE-2015-0286) - A flaw exists in the ASN1_item_ex_d2i() function due to a failure to reinitialize last seen 2020-06-01 modified 2020-06-02 plugin id 82077 published 2015-03-25 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/82077 title stunnel < 5.12 OpenSSL Multiple Vulnerabilities NASL family Web Servers NASL id HPSMH_7_2_6.NASL description According to the web server last seen 2020-06-01 modified 2020-06-02 plugin id 90251 published 2016-03-29 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/90251 title HP System Management Homepage < 7.2.6 Multiple Vulnerabilities (FREAK) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201503-11.NASL description The remote host is affected by the vulnerability described in GLSA-201503-11 (OpenSSL: Multiple vulnerabilities) Multiple vulnerabilities have been found in OpenSSL. Please review the CVE identifiers and the upstream advisory referenced below for details: RSA silently downgrades to EXPORT_RSA [Client] (Reclassified) (CVE-2015-0204) Segmentation fault in ASN1_TYPE_cmp (CVE-2015-0286) ASN.1 structure reuse memory corruption (CVE-2015-0287) X509_to_X509_REQ NULL pointer deref (CVE-2015-0288) PKCS7 NULL pointer dereferences (CVE-2015-0289) Base64 decode (CVE-2015-0292) DoS via reachable assert in SSLv2 servers (CVE-2015-0293) Use After Free following d2i_ECPrivatekey error (CVE-2015-0209) The following issues affect OpenSSL 1.0.2 only which is not part of the supported Gentoo stable tree: OpenSSL 1.0.2 ClientHello sigalgs DoS (CVE-2015-0291) Multiblock corrupted pointer (CVE-2015-0290) Segmentation fault in DTLSv1_listen (CVE-2015-0207) Segmentation fault for invalid PSS parameters (CVE-2015-0208) Empty CKE with client auth and DHE (CVE-2015-1787) Handshake with unseeded PRNG (CVE-2015-0285) Impact : A remote attacker can utilize multiple vectors to cause Denial of Service or Information Disclosure. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 82010 published 2015-03-24 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/82010 title GLSA-201503-11 : OpenSSL: Multiple vulnerabilities (FREAK)
The Hacker News
| id | THN:DE8AA8BC1B57B5EDE3E407E4F781669E |
| last seen | 2018-01-27 |
| modified | 2015-07-07 |
| published | 2015-07-06 |
| reporter | Mohit Kumar |
| source | https://thehackernews.com/2015/07/openssl-vulnerability-patch.html |
| title | OpenSSL to Patch Undisclosed High Severity Vulnerability this Thursday |
References
- http://marc.info/?l=bugtraq&m=143748090628601&w=2
- http://marc.info/?l=bugtraq&m=143748090628601&w=2
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
- http://marc.info/?l=bugtraq&m=144050155601375&w=2
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- http://marc.info/?l=bugtraq&m=144050297101809&w=2
- http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015
- http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015
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- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
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- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=76343947ada960b6269090638f5391068daee88d
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- https://security.gentoo.org/glsa/201503-11
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