Cryptographic issues in gnutls (Alpine package)

1) Cryptographic issues

EUVDB-ID: #VU32801

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1573

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

gnutls_cipher.c in libgnutls in GnuTLS before 2.12.17 and 3.x before 3.0.15 does not properly handle data encrypted with a block cipher, which allows remote attackers to cause a denial of service (heap memory corruption and application crash) via a crafted record, as demonstrated by a crafted GenericBlockCipher structure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

gnutls (Alpine package): 2.8.6-r0 - 2.10.5-r2

CPE2.3

• cpe:2.3:a:alpine:gnutls_alpine_package:2.8.6-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:a:alpine:gnutls_alpine_package:2.8.6-r3:*:*:*:*:alpine_linux:*:2.0
• cpe:2.3:a:alpine:gnutls_alpine_package:2.10.5-r2:*:*:*:*:alpine_linux:*:2.1

External links

https://git.alpinelinux.org/aports/commit/?id=fc80d19ad803e9bab83992c60721f448b9eae014
https://git.alpinelinux.org/aports/commit/?id=a76894792d2a4a7ae3a2df425ce54381e5eaf349
https://git.alpinelinux.org/aports/commit/?id=5807f1e6a9a8ddbbef4b07ffc9720605eed93291

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.