Cryptographic issues in libssh



Published: 2014-03-14 | Updated: 2020-07-28
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2014-0017
CWE-ID CWE-310
Exploitation vector Local
Public exploit N/A
Vulnerable software
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libssh
Universal components / Libraries / Libraries used by multiple products

Vendor libssh

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cryptographic issues

EUVDB-ID: #VU32570

Risk: Low

CVSSv3.1: 3.5 [CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-0017

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libssh: 0.6.0 - 0.6.1

External links

http://lists.opensuse.org/opensuse-updates/2014-03/msg00036.html
http://lists.opensuse.org/opensuse-updates/2014-03/msg00040.html
http://secunia.com/advisories/57407
http://www.debian.org/security/2014/dsa-2879
http://www.libssh.org/2014/03/04/libssh-0-6-3-security-release/
http://www.openwall.com/lists/oss-security/2014/03/05/1
http://www.ubuntu.com/usn/USN-2145-1
http://bugzilla.redhat.com/show_bug.cgi?id=1072191


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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