Input validation error in postgresql (Alpine package)

1) Input validation error

EUVDB-ID: #VU32770

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-3489

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote #AU# to gain access to sensitive information.

The xml_parse function in the libxml2 support in the core server component in PostgreSQL 8.3 before 8.3.20, 8.4 before 8.4.13, 9.0 before 9.0.9, and 9.1 before 9.1.5 allows remote authenticated users to determine the existence of arbitrary files or URLs, and possibly obtain file or URL content that triggers a parsing error, via an XML value that refers to (1) a DTD or (2) an entity, related to an XML External Entity (aka XXE) issue.

Mitigation

Install update from vendor's website.

Vulnerable software versions

postgresql (Alpine package): 9.0.8-r0

CPE2.3

• cpe:2.3:a:alpine:postgresql_alpine_package:9.0.8-r0:*:*:*:*:alpine_linux:*:2.1

External links

https://git.alpinelinux.org/aports/commit/?id=f74a7e2ad3e172936c54f9a7a45c5a52e2a67fe2
https://git.alpinelinux.org/aports/commit/?id=f78420a1d1a6053c04ab7635ae72ec2537810a55
https://git.alpinelinux.org/aports/commit/?id=1c5310eff360085f33d17aad26ce9569a42419e7
https://git.alpinelinux.org/aports/commit/?id=cd8669403fa9d39f9b385aaee42d8da3d1db20ff

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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