Vulnerabilities > CVE-2016-7054 - Improper Access Control vulnerability in Openssl 1.1.0/1.1.0A/1.1.0B
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
In OpenSSL 1.1.0 before 1.1.0c, TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 3 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Embedding Scripts within Scripts An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
- Signature Spoofing by Key Theft An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Exploit-Db
| file | exploits/linux/dos/40899.py |
| id | EDB-ID:40899 |
| last seen | 2018-11-30 |
| modified | 2016-12-11 |
| platform | linux |
| port | |
| published | 2016-12-11 |
| reporter | Exploit-DB |
| source | https://www.exploit-db.com/download/40899 |
| title | OpenSSL 1.1.0a/1.1.0b - Denial of Service |
| type | dos |
Nessus
NASL family Windows NASL id HP_INTELLIGENT_MANAGEMENT_CENTER_7_3_E0504P04.NASL description The version of HPE Intelligent Management Center (iMC) PLAT installed on the Windows host is prior to 7.3 E0504P04. It is, therefore, affected by multiple vulnerabilities : - An unspecified flaw exists that allows an unauthenticated, remote attacker to execute arbitrary code. (CVE-2017-5815) - A command injection vulnerability exists in the dbman service due to improper validation of user-supplied input before it is passed to a system call. An unauthenticated, remote attacker can exploit this, via a specially crafted opcode 10008 request, to inject and execute arbitrary OS commands with SYSTEM privileges. (CVE-2017-5816) - Multiple command injection vulnerabilities exist in the dbman service due to improper validation of user-supplied input before it is passed to a system call. An unauthenticated, remote attacker can exploit these, via a specially crafted opcode 10007 request, to inject and execute arbitrary OS commands with SYSTEM privileges. (CVE-2017-5817, CVE-2017-5819) - A flaw exists in the dbman service when handling opcode 10007 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to delete arbitrary files with SYSTEM privileges. (CVE-2017-5818) - A flaw exists in the dbman service when handling opcode 10004 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary code. (CVE-2017-5820) - A flaw exists in the dbman service when handling opcode 10006 and 10010 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially request, to execute arbitrary code. (CVE-2017-5821) - A flaw exists in the dbman service when handling opcode 10010 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary code. (CVE-2017-5822) - A flaw exists in the dbman service when handling opcode 10013 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary code. (CVE-2017-5823) - A NULL pointer deference flaw exists, specifically in the asn1_item_embed_d2i() function within file crypto/asn1/tasn_dec.c, when handling the ASN.1 CHOICE type, which results in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7053) - A heap overflow condition exists in the chacha20_poly1305_cipher() function within file crypto/evp/e_chacha20_poly1305.c when handling TLS connections using *-CHACHA20-POLY1305 cipher suites. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7054) - A carry propagation error exists in the Broadwell-specific Montgomery multiplication procedure when handling input lengths divisible by but longer than 256 bits. This can result in transient authentication and key negotiation failures or reproducible erroneous outcomes of public-key operations with specially crafted input. A man-in-the-middle attacker can possibly exploit this issue to compromise ECDH key negotiations that utilize Brainpool P-512 curves. (CVE-2016-7055) - An unspecified remote code execution vulnerability exists that allows an unauthenticated, remote attacker to execute arbitrary code. (CVE-2017-8948) - A stack-based buffer overflow condition exists due to improper validation of input when copying data. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2017-8956) Note that Intelligent Management Center (iMC) is an HPE product; however, it is branded as H3C. last seen 2020-06-01 modified 2020-06-02 plugin id 100869 published 2017-06-19 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/100869 title H3C / HPE Intelligent Management Center PLAT < 7.3 E0504P04 Multiple Vulnerabilities NASL family Web Servers NASL id OPENSSL_1_1_0C.NASL description According to its banner, the version of OpenSSL running on the remote host is 1.1.0 prior to 1.1.0c. It is, therefore, affected by multiple vulnerabilities : - A NULL pointer deference flaw exists, specifically in the asn1_item_embed_d2i() function within file crypto/asn1/tasn_dec.c, when handling the ASN.1 CHOICE type, which results in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7053) - A heap overflow condition exists in the chacha20_poly1305_cipher() function within file crypto/evp/e_chacha20_poly1305.c when handling TLS connections using *-CHACHA20-POLY1305 cipher suites. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7054) - A carry propagation error exists in the Broadwell-specific Montgomery multiplication procedure when handling input lengths divisible by but longer than 256 bits. This can result in transient authentication and key negotiation failures or reproducible erroneous outcomes of public-key operations with specially crafted input. An unauthenticated, remote attacker can possibly exploit this issue to compromise ECDH key negotiations that utilize Brainpool P-512 curves. (CVE-2016-7055) last seen 2020-06-01 modified 2020-06-02 plugin id 94963 published 2016-11-18 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94963 title OpenSSL 1.1.0 < 1.1.0c Multiple Vulnerabilities NASL family Misc. NASL id HP_IMC_73_E0504P04.NASL description The version of HPE Intelligent Management Center (iMC) PLAT installed on the remote host is prior to 7.3 E0504P04. It is, therefore, affected by multiple vulnerabilities : - A NULL pointer deference flaw exists, specifically in the asn1_item_embed_d2i() function within file crypto/asn1/tasn_dec.c, when handling the ASN.1 CHOICE type, which results in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7053) - A heap overflow condition exists in the chacha20_poly1305_cipher() function within file crypto/evp/e_chacha20_poly1305.c when handling TLS connections using *-CHACHA20-POLY1305 cipher suites. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-7054) - A carry propagation error exists in the Broadwell-specific Montgomery multiplication procedure when handling input lengths divisible by but longer than 256 bits. This can result in transient authentication and key negotiation failures or reproducible erroneous outcomes of public-key operations with specially crafted input. A man-in-the-middle attacker can possibly exploit this issue to compromise ECDH key negotiations that utilize Brainpool P-512 curves. (CVE-2016-7055) - An unspecified flaw exists that allows an unauthenticated, remote attacker to execute arbitrary code. (CVE-2017-5815) - A command injection vulnerability exists in the dbman service due to improper validation of user-supplied input before it is passed to a system call. An unauthenticated, remote attacker can exploit this, via a specially crafted opcode 10008 request, to inject and execute arbitrary OS commands with SYSTEM privileges. (CVE-2017-5816) - Multiple command injection vulnerabilities exist in the dbman service due to improper validation of user-supplied input before it is passed to a system call. An unauthenticated, remote attacker can exploit these, via a specially crafted opcode 10007 request, to inject and execute arbitrary OS commands with SYSTEM privileges. (CVE-2017-5817, CVE-2017-5819) - A flaw exists in the dbman service when handling opcode 10007 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to delete arbitrary files with SYSTEM privileges. (CVE-2017-5818) - A flaw exists in the dbman service when handling opcode 10004 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary code. (CVE-2017-5820) - A flaw exists in the dbman service when handling opcode 10006 and 10010 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially request, to execute arbitrary code. (CVE-2017-5821) - A flaw exists in the dbman service when handling opcode 10010 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary code. (CVE-2017-5822) - A flaw exists in the dbman service when handling opcode 10013 requests due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary code. (CVE-2017-5823) - An unspecified remote code execution vulnerability exists that allows an unauthenticated, remote attacker to execute arbitrary code. (CVE-2017-8948) - A stack-based buffer overflow condition exists due to improper validation of input when copying data. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2017-8956) Note that Intelligent Management Center (iMC) is an HPE product; however, it is branded as H3C. last seen 2020-06-01 modified 2020-06-02 plugin id 100868 published 2017-06-19 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/100868 title H3C / HPE Intelligent Management Center PLAT < 7.3 E0504P04 Multiple Vulnerabilities NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_50751310A76311E6A881B499BAEBFEAF.NASL description OpenSSL reports : - ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054) Severity: High TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS attack by corrupting larger payloads. This can result in an OpenSSL crash. This issue is not considered to be exploitable beyond a DoS. - CMS Null dereference (CVE-2016-7053) Severity: Medium Applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected. - Montgomery multiplication may produce incorrect results (CVE-2016-7055)i Severity: Low There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure that handles input lengths divisible by, but longer than 256 bits. last seen 2020-06-01 modified 2020-06-02 plugin id 94691 published 2016-11-11 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94691 title FreeBSD : openssl -- multiple vulnerabilities (50751310-a763-11e6-a881-b499baebfeaf)
The Hacker News
| id | THN:82BC3700070E6531BDA9B4A8023496B6 |
| last seen | 2018-01-27 |
| modified | 2016-11-10 |
| published | 2016-11-10 |
| reporter | Mohit Kumar |
| source | https://thehackernews.com/2016/11/openssl-patch-update.html |
| title | OpenSSL Releases Patch For "High" Severity Vulnerability |