NULL pointer dereference in libgit2-0.27 (Alpine package)

1) NULL pointer dereference

EUVDB-ID: #VU32004

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-8569

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a cat-file command with a crafted object file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libgit2-0.27 (Alpine package): 0.27.8-r0

CPE2.3

• cpe:2.3:a:alpine:libgit2-0.27_alpine_package:0.27.8-r0:*:*:*:*:alpine_linux:*:3.10

External links

https://git.alpinelinux.org/aports/commit/?id=66ffc9c34b1af93bdd18ba67d52c4e9994d6bdf6
https://git.alpinelinux.org/aports/commit/?id=5f77150ab6ff54d6897006bf52ae9685ed41d884
https://git.alpinelinux.org/aports/commit/?id=85f76ec26306ea84e1ce3cfc602fca6afb6d7300
https://git.alpinelinux.org/aports/commit/?id=322e4dec713220f3d26b24753df9fdb5d389928e
https://git.alpinelinux.org/aports/commit/?id=2037153254c565cde4a1c9b1d884d3bc27bf61dd

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.