Vulnerability Description
The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | 1.0.2 |
References
- http://marc.info/?l=bugtraq&m=143748090628601&w=2Mailing ListThird Party Advisory
- http://marc.info/?l=bugtraq&m=144050155601375&w=2Mailing ListThird Party Advisory
- http://marc.info/?l=bugtraq&m=144050297101809&w=2Mailing ListThird Party Advisory
- http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatchThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.htmlThird Party Advisory
- http://www.securityfocus.com/bid/73235Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1031929Third Party AdvisoryVDB Entry
- https://bto.bluecoat.com/security-advisory/sa92Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1202338Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=76343947ada960b6269090638f
FAQ
What is CVE-2015-0291?
CVE-2015-0291 is a vulnerability with a CVSS score of 5.0 (MEDIUM). The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_alg...
How severe is CVE-2015-0291?
CVE-2015-0291 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-0291?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl.