#VU42351 Input validation error in GnuTLS and Opensuse - CVE-2013-4487

Vulnerability identifier: #VU42351

Vulnerability 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-2013-4487

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GnuTLS
Universal components / Libraries / Libraries used by multiple products
Opensuse
Operating systems & Components / Operating system

Vendor: GnuTLS
SUSE

Description

The vulnerability allows remote servers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (memory corruption) via a response with more than four DANE entries.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

GnuTLS: 3.1.0 - 3.2.5

Opensuse: 3.1.0 - 13.1

---

External links
https://lists.opensuse.org/opensuse-updates/2013-11/msg00064.html
https://www.openwall.com/lists/oss-security/2013/10/31/4
https://gitorious.org/gnutls/gnutls/commit/0dd5529509e46b11d5c0f3f26f99294e0e5fa6dc

---

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.