Buffer overflow in libgit2-0.27 (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU32000

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-10128

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Buffer overflow in the git_pkt_parse_line function in transports/smart_pkt.c in the Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to have unspecified impact via a crafted non-flush packet.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libgit2-0.27 (Alpine package): 0.27.8-r0

External links

http://git.alpinelinux.org/aports/commit/?id=c8d39d0ddffc93f57a87b567422cbdbbd707e1f9
http://git.alpinelinux.org/aports/commit/?id=5f77150ab6ff54d6897006bf52ae9685ed41d884
http://git.alpinelinux.org/aports/commit/?id=97bfdb9ab9ae37dab1ee2cfc1c7fa1001fce2858
http://git.alpinelinux.org/aports/commit/?id=b330e4c76dcf128b04ce82f0852cafd4e14a6300
http://git.alpinelinux.org/aports/commit/?id=60e6b42c26c116a5810745d0da6792f3f8fe1d5f
http://git.alpinelinux.org/aports/commit/?id=322e4dec713220f3d26b24753df9fdb5d389928e

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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