Cryptographic issues in openssl (Alpine package)

1) Cryptographic issues

EUVDB-ID: #VU32589

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-2013-6449

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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

The ssl_get_algorithm2 function in ssl/s3_lib.c in OpenSSL before 1.0.2 obtains a certain version number from an incorrect data structure, which allows remote attackers to cause a denial of service (daemon crash) via crafted traffic from a TLS 1.2 client.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openssl (Alpine package): 1.0.0c-r0 - 1.0.1b-r0

CPE2.3

• cpe:2.3:o:alpine:openssl_alpine_package:1.0.0c-r0:*:*:*:*:alpine_linux:*:2.0
• cpe:2.3:o:alpine:openssl_alpine_package:1.0.0i-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:openssl_alpine_package:1.0.0k-r0:*:*:*:*:alpine_linux:*:2.2

External links

https://git.alpinelinux.org/aports/commit/?id=e8b94d00c8dddd125fe6dca0098b42a33680c02e
https://git.alpinelinux.org/aports/commit/?id=566868b54f5934c3805e86a40fb1ac254e22409e
https://git.alpinelinux.org/aports/commit/?id=a36c8fc70ef138aa409a41c166b569e4e3ad25f0

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.