libssh up to 0.6.2 OpenSSL PRNG PID RAND_bytes cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in libssh up to 0.6.2. This vulnerability affects the function RAND_bytes of the component OpenSSL PRNG PID Handler. Performing a manipulation results in cryptographic issue. This vulnerability is cataloged as CVE-2014-0017. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in libssh up to 0.6.2. This affects the function RAND_bytes of the component OpenSSL PRNG PID Handler. The manipulation with an unknown input leads to a cryptographic issue vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality. The summary by CVE is:

The RAND_bytes function in libssh before 0.6.3, when forking is enabled, does not properly reset the state of the OpenSSL pseudo-random number generator (PRNG), which causes the state to be shared between children processes and allows local users to obtain sensitive information by leveraging a pid collision.

The weakness was shared 03/05/2014 by Aris Adamantiadis as libssh 0.6.3 (Security release) as confirmed release notes (Website). The advisory is shared at libssh.org. This vulnerability is uniquely identified as CVE-2014-0017 since 12/03/2013. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 73000 (Mandriva Linux Security Advisory : libssh (MDVSA-2014:053)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121908 (Fedora Security Update for libssh (FEDORA-2014-3485)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.libssh.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (91732), Tenable (73000), SecurityFocus (BID 65963†), Secunia (SA57127†) and Vulnerability Center (SBV-43496†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73000
Nessus Name: Mandriva Linux Security Advisory : libssh (MDVSA-2014:053)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 702879
OpenVAS Name: Debian Security Advisory DSA 2879-1 (libssh - security update
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.libssh.org

Timelineinfo

12/03/2013 🔍
03/04/2014 +91 days 🔍
03/04/2014 +0 days 🔍
03/05/2014 +1 days 🔍
03/09/2014 +4 days 🔍
03/14/2014 +5 days 🔍
03/14/2014 +0 days 🔍
03/17/2014 +3 days 🔍
05/08/2026 +4435 days 🔍

Sourcesinfo

Advisory: libssh 0.6.3 (Security release)
Researcher: Aris Adamantiadis
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-0017 (🔍)
GCVE (CVE): GCVE-0-2014-0017
GCVE (VulDB): GCVE-100-12609

OVAL: 🔍

X-Force: 91732 - libssh PRNG information disclosure, Medium Risk
SecurityFocus: 65963 - Libssh CVE-2014-0017 Random Number Generator Weakness
Secunia: 57127 - libssh Worker Process Predictable PRNG State Weakness, Not Critical
Vulnerability Center: 43496 - Libssh <0.6.3 Remote Security Bypass Vulnerability via PRNG after Fork(), Medium

Entryinfo

Created: 03/17/2014 09:03
Updated: 05/08/2026 04:35
Changes: 03/17/2014 09:03 (77), 05/22/2017 11:02 (3), 06/15/2021 16:12 (3), 12/22/2024 09:42 (20), 05/08/2026 04:35 (1)
Complete: 🔍
Committer: olku
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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