Buffer overflow in postgresql (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU32339

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-0773

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

PostgreSQL before 9.1.20, 9.2.x before 9.2.15, 9.3.x before 9.3.11, 9.4.x before 9.4.6, and 9.5.x before 9.5.1 allows remote attackers to cause a denial of service (infinite loop or buffer overflow and crash) via a large Unicode character range in a regular expression.

Mitigation

Install update from vendor's website.

Vulnerable software versions

postgresql (Alpine package): 9.1.3-r0 - 9.3.10-r0

External links

http://git.alpinelinux.org/aports/commit/?id=de54eeef246ed1ee8fcba3da5c559af490d2e2e9
http://git.alpinelinux.org/aports/commit/?id=87879a3f27f9101b4c265ef56b479dbe23fd41c9
http://git.alpinelinux.org/aports/commit/?id=702b09615bb3319131fb1a8aeb19ff42bc312a29
http://git.alpinelinux.org/aports/commit/?id=65b5dd4abceafa43b63560e421f11671eeef5940

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.