CVE-2015-3146 — NULL Pointer Dereference in Libssh

CWE-476 — NULL Pointer Dereference11 documents8 sources
Severity
7.5HIGHNVD
EPSS
2.8%
top 13.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
LibsshCanonical Ubuntu LinuxDebian Linux+1 more
Timeline
PublishedApr 13
Latest updateMay 17

Description

The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶Debianlibssh/libssh< 0.6.3-4.2+3
▶Ubuntulibssh/libssh< 0.6.1-0ubuntu3.3
▶NVDlibssh/libssh0.6.4

Also affects: Debian Linux 7.0, 8.0, Fedora 21, 22, Ubuntu Linux 12.04, 14.04, 15.10

🔴Vulnerability Details

4
GHSA
GHSA-46jx-xcg7-prj7: The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb↗2022-05-17
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OSV
CVE-2015-3146: The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb↗2016-04-13
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CVEList
CVE-2015-3146: The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb↗2016-04-13
▶
OSV
libssh vulnerabilities↗2016-02-23
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📋Vendor Advisories

3
Ubuntu
libssh vulnerabilities↗2016-02-23
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Red Hat
libssh: null pointer dereference due to a logical error in the handling of a SSH_MSG_NEWKEYS and KEXDH_REPLY packets↗2015-04-30
▶
Debian
CVE-2015-3146: libssh - The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_c...↗2015
▶

💬Community

3
Bugzilla
CVE-2015-3146 libssh: null pointer dereference due to a logical error in the handling of a SSH_MSG_NEWKEYS and KEXDH_REPLY packets [fedora-all]↗2015-05-04
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Bugzilla
CVE-2015-3146 libssh: null pointer dereference due to a logical error in the handling of a SSH_MSG_NEWKEYS and KEXDH_REPLY packets [epel-all]↗2015-05-04
▶
Bugzilla
CVE-2015-3146 libssh: null pointer dereference due to a logical error in the handling of a SSH_MSG_NEWKEYS and KEXDH_REPLY packets↗2015-04-21
▶