#VU45308 Resource management error in OpenSSL - CVE-2011-0014

Vulnerability identifier: #VU45308

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-2011-0014

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

Description

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

ssl/t1_lib.c in OpenSSL 0.9.8h through 0.9.8q and 1.0.0 through 1.0.0c allows remote attackers to cause a denial of service (crash), and possibly obtain sensitive information in applications that use OpenSSL, via a malformed ClientHello handshake message that triggers an out-of-bounds memory access, aka "OCSP stapling vulnerability."

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenSSL: 0.9.8h - 0.9.8p, 1.0.0c - 1.0.0

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External links
https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-002.txt.asc
https://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
https://lists.apple.com/archives/security-announce/2011//Jun/msg00000.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-February/054007.html
https://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
https://marc.info/?l=bugtraq&m=130497251507577&w=2
https://marc.info/?l=bugtraq&m=131042179515633&w=2
https://osvdb.org/70847
https://secunia.com/advisories/43227
https://secunia.com/advisories/43286
https://secunia.com/advisories/43301
https://secunia.com/advisories/43339
https://secunia.com/advisories/44269
https://secunia.com/advisories/57353
https://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.668823
https://support.apple.com/kb/HT4723
https://www.debian.org/security/2011/dsa-2162
https://www.mandriva.com/security/advisories?name=MDVSA-2011:028
https://www.openssl.org/news/secadv_20110208.txt
https://www.redhat.com/support/errata/RHSA-2011-0677.html
https://www.securityfocus.com/bid/46264
https://www.securitytracker.com/id?1025050
https://www.ubuntu.com/usn/USN-1064-1
https://www.vupen.com/english/advisories/2011/0361
https://www.vupen.com/english/advisories/2011/0387
https://www.vupen.com/english/advisories/2011/0389
https://www.vupen.com/english/advisories/2011/0395
https://www.vupen.com/english/advisories/2011/0399
https://www.vupen.com/english/advisories/2011/0603
https://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18985
https://support.f5.com/csp/article/K10534046

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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.