Out-of-bounds read in libgit2-1.0 (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU13843

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10888

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to a missing check in the git_delta_apply function, as defined in the delta.c file. A remote unauthenticated attacker can trick the victim into opening a specially crafted binary delta file, trigger an out-of-bounds read condition and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libgit2-1.0 (Alpine package): 1.0.1-r0

External links

http://git.alpinelinux.org/aports/commit/?id=6425be941961881e542ff2604ea869f94f51c0a8

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.