#VU41415 Input validation error in OpenSSL - CVE-2014-5139
Vulnerability identifier: #VU41415
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:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
OpenSSL
Server applications /
Encryption software
Vendor: OpenSSL Software Foundation
Description
The vulnerability allows remote SSL 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 (NULL pointer dereference and client application crash) via a ServerHello message that includes an SRP ciphersuite without the required negotiation of that ciphersuite with the client.
Mitigation
Install update from vendor's website.
Vulnerable software versions
OpenSSL: 1.0.1c - 1.0.1
External links
https:httpftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2014-008.txt.asc
https://aix.software.ibm.com/aix/efixes/security/openssl_advisory10.asc
https://lists.opensuse.org/opensuse-updates/2014-08/msg00036.html
https://marc.info/?l=bugtraq&m=142350350616251&w=2
https://marc.info/?l=bugtraq&m=142495837901899&w=2
https://marc.info/?l=bugtraq&m=142624590206005&w=2
https://marc.info/?l=bugtraq&m=142624619906067
https://marc.info/?l=bugtraq&m=142624619906067&w=2
https://marc.info/?l=bugtraq&m=142624679706236&w=2
https://marc.info/?l=bugtraq&m=142624719706349&w=2
https://marc.info/?l=bugtraq&m=142660345230545&w=2
https://marc.info/?l=bugtraq&m=142791032306609&w=2
https://marc.info/?l=bugtraq&m=143290437727362&w=2
https://marc.info/?l=bugtraq&m=143290522027658&w=2
https://secunia.com/advisories/59700
https://secunia.com/advisories/59710
https://secunia.com/advisories/59756
https://secunia.com/advisories/60022
https://secunia.com/advisories/60221
https://secunia.com/advisories/60493
https://secunia.com/advisories/60803
https://secunia.com/advisories/60810
https://secunia.com/advisories/60917
https://secunia.com/advisories/60921
https://secunia.com/advisories/61017
https://secunia.com/advisories/61100
https://secunia.com/advisories/61171
https://secunia.com/advisories/61184
https://secunia.com/advisories/61392
https://secunia.com/advisories/61775
https://secunia.com/advisories/61959
https://security.gentoo.org/glsa/glsa-201412-39.xml
https://support.f5.com/kb/en-us/solutions/public/15000/500/sol15567.html
https://www.debian.org/security/2014/dsa-2998
https://www.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-372998.htm
https://www.securityfocus.com/bid/69077
https://www.securitytracker.com/id/1030693
https://www.tenable.com/security/tns-2014-06
https://www-01.ibm.com/support/docview.wss?uid=nas8N1020240
https://www-01.ibm.com/support/docview.wss?uid=swg21682293
https://www-01.ibm.com/support/docview.wss?uid=swg21683389
https://www-01.ibm.com/support/docview.wss?uid=swg21686997
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=80bd7b41b30af6ee96f519e629463583318de3b0
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=83764a989dcc87fbea337da5f8f86806fe767b7e
https://lists.balabit.hu/pipermail/syslog-ng-announce/2014-September/000196.html
https://www.freebsd.org/security/advisories/FreeBSD-SA-14:18.openssl.asc
https://www.openssl.org/news/secadv_20140806.txt
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.
