Vulnerability in OpenSSL
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 renegotiation.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.077 (94.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.077 · newest: 0.077 · change: 0.000
Affected products
- OpenSSL — versions 1.0.2
Public proof-of-concept exploits
References
- kc.mcafee.com/corporate/index (Third Party Advisory)
- www.securityfocus.com/bid/73235 (VDB Entry, Third Party Advisory, vdb-entry)
- www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html (Third Party Advisory)
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory)
- bto.bluecoat.com/security-advisory/sa92 (Third Party Advisory)
- www.openssl.org/news/secadv_20150319.txt (Vendor Advisory)
- www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html (Third Party Advisory)
- git.openssl.org/
- marc.info/ (vendor-advisory, Mailing List, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2015-0291?
- CVE-2015-0291 is a vulnerability in OpenSSL. Published 2015-03-19.
- Is CVE-2015-0291 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.