{"id":"CVE-2015-0291","aliases":["BELL-CVE-2015-0291","EUVD-2015-0304","GHSA-3hjm-7xr7-8fgf"],"status":"published","title":"The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.06884,"percentile":0.94107,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2015-03-19T00:00:00Z","modified":"2026-06-17T00:19:55Z","products":[{"vendor":"openssl","product":"openssl"}],"references":[{"url":"https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10110","tags":["x_transferred","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/73235","tags":["vdb-entry","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html","tags":["x_transferred","Third Party Advisory"]},{"url":"http://marc.info/?l=bugtraq\u0026m=144050155601375\u0026w=2","tags":["vendor-advisory","x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://bto.bluecoat.com/security-advisory/sa92","tags":["x_transferred","Third Party Advisory"]},{"url":"https://www.openssl.org/news/secadv_20150319.txt","tags":["x_transferred","Vendor Advisory"]},{"url":"http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html","tags":["x_transferred","Third Party Advisory"]},{"url":"https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=76343947ada960b6269090638f5391068daee88d","tags":["x_transferred"]},{"url":"http://marc.info/?l=bugtraq\u0026m=143748090628601\u0026w=2","tags":["vendor-advisory","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html","tags":["x_transferred","Third Party Advisory"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html","tags":["x_transferred","Patch","Third Party Advisory"]},{"url":"http://www.fortiguard.com/advisory/2015-03-24-openssl-vulnerabilities-march-2015","tags":["x_transferred","Third Party Advisory"]},{"url":"http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html","tags":["x_transferred","Third Party Advisory"]},{"url":"http://marc.info/?l=bugtraq\u0026m=144050297101809\u0026w=2","tags":["vendor-advisory","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://www.securitytracker.com/id/1031929","tags":["vdb-entry","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://security.gentoo.org/glsa/201503-11","tags":["vendor-advisory","x_transferred","Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1202338","tags":["x_transferred","Issue Tracking"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-0291"},{"url":"https://git.openssl.org/?p=openssl.git;a=commit;h=76343947ada960b6269090638f5391068daee88d"},{"url":"https://github.com/advisories/GHSA-3hjm-7xr7-8fgf"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2015-0291","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2015-0291","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.","status":"published","published":"2015-03-19T00:00:00Z","modified":"2024-08-06T04:03:10.909Z","updated_at":"2026-11-02T14:35:45.088047Z"}],"euvd":[{"id":"EUVD-2015-0304","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.","status":"published","published":"2015-03-19T00:00:00Z","modified":"2024-08-06T04:03:10Z","updated_at":"2026-11-03T02:22:20.481932Z"}],"ghsa":[{"id":"GHSA-3hjm-7xr7-8fgf","title":"The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to...","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.","status":"published","published":"2022-05-14T01:55:48Z","modified":"2025-04-12T12:47:23Z","updated_at":"2026-11-02T15:01:21.34906Z"}],"nvd":[{"id":"CVE-2015-0291","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.","status":"published","published":"2015-03-19T22:59:09.66Z","modified":"2026-06-17T00:19:55.517Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:03:03.313464Z"}],"osv":[{"id":"BELL-CVE-2015-0291","title":"CVE-2015-0291 does not affect BellSoft software","status":"withdrawn","published":"2015-03-19T22:59:00Z","modified":"2026-01-28T07:21:37.141317Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium"}],"updated_at":"2026-11-02T15:28:13.47097Z"}]}}