#VU32588 NULL pointer dereference in OpenSSL - CVE-2013-4353

Vulnerability identifier: #VU32588

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-2013-4353

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted Next Protocol Negotiation record in a TLS handshake.

Mitigation
Update to version 1.0.1f.

Vulnerable software versions

OpenSSL: 1.0.1c - 1.0.1

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External links
https://git.openssl.org/gitweb/?p=openssl.git;a=blob_plain;f=CHANGES;hb=refs/heads/OpenSSL_1_0_1-stable
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=197e0ea817ad64820789d86711d55ff50d71f631
https://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html
https://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
https://lists.opensuse.org/opensuse-updates/2014-01/msg00065.html
https://lists.opensuse.org/opensuse-updates/2014-01/msg00067.html
https://lists.opensuse.org/opensuse-updates/2014-01/msg00070.html
https://rhn.redhat.com/errata/RHSA-2014-0015.html
https://rhn.redhat.com/errata/RHSA-2014-0041.html
https://www.debian.org/security/2014/dsa-2837
https://www.openssl.org/news/vulnerabilities.html
https://www.splunk.com/view/SP-CAAAMB3
https://www.ubuntu.com/usn/USN-2079-1
https://www-01.ibm.com/support/docview.wss?uid=isg400001841
https://www-01.ibm.com/support/docview.wss?uid=isg400001843
https://bugzilla.redhat.com/show_bug.cgi?id=1049058

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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.