CVE-2015-0291
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…
Does this matter?
Lower severity and a low EPSS score (6.88%). Track it; it rarely justifies an emergency change on its own.
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 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 6.88% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- openssl/openssl
- Source
- secalert@redhat.com
EPSS 6.9% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://marc.info/?l=bugtraq&m=143748090628601&w=2Mailing List, Third Party Advisory
- http://marc.info/?l=bugtraq&m=144050155601375&w=2Mailing List, Third Party Advisory
- http://marc.info/?l=bugtraq&m=144050297101809&w=2Mailing List, Third 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.htmlPatch, Third 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 Advisory, VDB Entry
- http://www.securitytracker.com/id/1031929Third Party Advisory, VDB 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=76343947ada960b6269090638f5391068daee88d
- https://kc.mcafee.com/corporate/index?page=content&id=SB10110Third Party Advisory
- https://security.gentoo.org/glsa/201503-11Third Party Advisory
- https://www.openssl.org/news/secadv_20150319.txtVendor Advisory
- http://marc.info/?l=bugtraq&m=143748090628601&w=2Mailing List, Third Party Advisory
- http://marc.info/?l=bugtraq&m=144050155601375&w=2Mailing List, Third Party Advisory
- http://marc.info/?l=bugtraq&m=144050297101809&w=2Mailing List, Third 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.htmlPatch, Third 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 Advisory, VDB Entry
- http://www.securitytracker.com/id/1031929Third Party Advisory, VDB Entry
- https://bto.bluecoat.com/security-advisory/sa92Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.