Improper access control in libgit2 - CVE-2016-10130

Vulnerability identifier: #VU32002

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2016-10130

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The http_connect function in transports/http.c in libgit2 before 0.24.6 and 0.25.x before 0.25.1 might allow man-in-the-middle attackers to spoof servers by leveraging clobbering of the error variable.

libgit2
Arch Linux
Fedora
Ubuntu
libgit2-0.27 (Alpine package)
libgit2-1.0 (Alpine package)
libgit2 (Ubuntu package)
libgit2

Install update from vendor's website.

libgit2-1.0 (Alpine package) - update to 1.0.1-r1
libgit2 (Ubuntu package) - addressed in versions 0.19.0-2ubuntu0.4+esm2, 0.24.1-2ubuntu0.2+esm3, 0.26.0+dfsg.1-1.1ubuntu0.2+esm2, 0.28.4+dfsg.1-2ubuntu0.1+esm1, 1.1.0+dfsg.1-4.1ubuntu0.1+esm1, 1.7.2+ds-1ubuntu3.1, 1.9.1+ds-1ubuntu1.1
libgit2 - addressed in versions 0.24.6-1.el7, 0.24.6-1.fc24, 0.24.6-1.fc25

• http://lists.opensuse.org/opensuse-updates/2017-02/msg00030.html
• http://lists.opensuse.org/opensuse-updates/2017-02/msg00036.html
• http://lists.opensuse.org/opensuse-updates/2017-02/msg00072.html
• http://www.openwall.com/lists/oss-security/2017/01/10/5
• http://www.openwall.com/lists/oss-security/2017/01/11/6
• http://www.securityfocus.com/bid/95359
• https://github.com/libgit2/libgit2/commit/9a64e62f0f20c9cf9b2e1609f037060eb2d8eb22
• https://github.com/libgit2/libgit2/commit/b5c6a1b407b7f8b952bded2789593b68b1876211
• https://libgit2.github.com/security/

• Improper access control in libgit2.github.com libgit2
• Improper access control in libgit2-0.27 (Alpine package)
• Arch Linux update for libgit2
• Improper access control in libgit2-1.0 (Alpine package)
• Fedora 25 update for libgit2
• Fedora 24 update for libgit2
• Fedora EPEL 7 update for libgit2
• Ubuntu update for libgit2