{"id":"CVE-2015-1794","aliases":["DEBIAN-CVE-2015-1794","EUVD-2015-1920","GHSA-x29w-fcg6-7f9m","MGASA-2015-0466","UBUNTU-CVE-2015-1794","USN-2830-1","openSUSE-SU-2024:10271-1","openSUSE-SU-2024:10529-1","openSUSE-SU-2024:11127-1"],"status":"published","title":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote...","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","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":"2026-11-08","score":0.0498,"percentile":0.92263,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189"],"published":"2015-12-04T00:00:00Z","modified":"2026-09-09T06:47:26Z","fixes":[{"ecosystem":"Debian:12","package":"openssl","fixed_in":["1.0.2e-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openssl","fixed_in":["1.0.2e-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openssl","fixed_in":["1.0.2e-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2e-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2e-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2e-1"}]}]},{"source":"osv","ecosystem":"Mageia:5","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2e-1.mga5"}]}],"bundled":4},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"openssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.16"}]}],"versions":["1.0.1e-3ubuntu1","1.0.1e-4ubuntu1","1.0.1e-4ubuntu2","1.0.1e-4ubuntu3","1.0.1e-4ubuntu4","1.0.1f-1ubuntu1","1.0.1f-1ubuntu2","1.0.1f-1ubuntu2.1","1.0.1f-1ubuntu2.2","1.0.1f-1ubuntu2.3","1.0.1f-1ubuntu2.4","1.0.1f-1ubuntu2.5","1.0.1f-1ubuntu2.7","1.0.1f-1ubuntu2.8","1.0.1f-1ubuntu2.11","1.0.1f-1ubuntu2.12","1.0.1f-1ubuntu2.15"],"bundled":5},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"openssl-1_1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.1l-1.2"}]}],"bundled":136}],"products":[{"vendor":"openssl","product":"openssl"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-openssl","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2015\u0026m=slackware-security.754583","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10761","tags":["x_transferred","web"]},{"url":"http://www.ubuntu.com/usn/USN-2830-1","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html","tags":["x_transferred","advisory"]},{"url":"http://openssl.org/news/secadv/20151203.txt","tags":["x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ada57746b6b80beae73111fe1291bf8dd89af91c","tags":["x_transferred","web"]},{"url":"http://www.securitytracker.com/id/1034294","tags":["vdb-entry","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://fortiguard.com/advisory/openssl-advisory-december-2015","tags":["x_transferred","advisory"]},{"url":"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322","tags":["x_transferred","web"]},{"url":"http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10759","tags":["x_transferred","web"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf","tags":["x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-1794"},{"url":"https://git.openssl.org/?p=openssl.git;a=commit;h=ada57746b6b80beae73111fe1291bf8dd89af91c"},{"url":"https://github.com/advisories/GHSA-x29w-fcg6-7f9m"},{"url":"https://security-tracker.debian.org/tracker/CVE-2015-1794","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2015-0466.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=17292","tags":["report"]},{"url":"https://www.debian.org/security/2015/dsa-3413","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2015-1794","tags":["report"]},{"url":"https://www.openssl.org/news/secadv/20151203.txt","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-2830-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-1794","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-3193","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-3194","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-3195","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2015-3196","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2006-7250","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-5077","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-0590","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-0591","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-0789","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-1377","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-1378","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-1379","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-1386","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2009-1387","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-0740","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-0742","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-1633","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-2939","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-3864","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-5298","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-0014","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-3207","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-3210","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4108","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4576","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4577","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4619","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-0027","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-0050","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-0884","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-1165","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-2110","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-2686","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4929","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-0166","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-0169","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4353","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-6449","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-6450","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0076","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0160","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0195","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0198","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0221","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0224","tags":["web"]},{"url":"https://www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ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"published","published":"2015-12-06T00:00:00Z","modified":"2024-08-06T04:54:16.274Z","updated_at":"2026-11-02T14:35:44.046042Z"}],"euvd":[{"id":"EUVD-2015-1920","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"published","published":"2015-12-06T00:00:00Z","modified":"2024-08-06T04:54:16Z","updated_at":"2026-11-03T02:22:14.212001Z"}],"ghsa":[{"id":"GHSA-x29w-fcg6-7f9m","title":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote...","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"published","published":"2022-05-17T01:06:56Z","modified":"2023-02-13T03:31:13Z","updated_at":"2026-11-02T14:54:05.992759Z"}],"nvd":[{"id":"CVE-2015-1794","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"published","published":"2015-12-06T20:59:00.127Z","modified":"2026-06-17T00:23:00.99Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:03:14.501367Z"}],"osv":[{"id":"CVE-2015-1794","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"published","published":"2015-12-06T20:59:00Z","modified":"2026-04-16T06:19:51.028914073Z","updated_at":"2026-11-02T15:44:00.594921Z"},{"id":"DEBIAN-CVE-2015-1794","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"published","published":"2015-12-06T20:59:00.127Z","modified":"2026-09-09T06:47:26.148313488Z","updated_at":"2026-11-02T15:45:26.752992Z"},{"id":"MGASA-2015-0466","title":"Updated openssl packages fix security vulnerability","description":"If a client receives a ServerKeyExchange for an anonymous DH ciphersuite\nwith the value of p set to 0 then a seg fault can occur leading to a\npossible denial of service attack (CVE-2015-1794).\n\nLoic Jonas Etienne of Qnective AG discovered that the signature\nverification routines will crash with a NULL pointer dereference if\npresented with an ASN.1 signature using the RSA PSS algorithm and absent\nmask generation function parameter. A remote attacker can exploit this\nflaw to crash any certificate verification operation and mount a denial of\nservice attack (CVE-2015-3194).\n\nAdam Langley of Google/BoringSSL discovered that OpenSSL will leak memory\nwhen presented with a malformed X509_ATTRIBUTE structure (CVE-2015-3195).\n\nA race condition flaw in the handling of PSK identify hints was\ndiscovered, potentially leading to a double free of the identify hint data\n(CVE-2015-3196).\n","status":"published","published":"2015-12-05T10:03:58Z","modified":"2026-04-16T06:26:04.706149123Z","updated_at":"2026-11-02T15:49:39.792687Z"},{"id":"openSUSE-SU-2024:10271-1","title":"libopenssl-devel-1.0.2j-2.2 on GA media","description":"These are all security issues fixed in the libopenssl-devel-1.0.2j-2.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:27:51.178222Z","updated_at":"2026-11-02T16:58:33.135986Z"},{"id":"openSUSE-SU-2024:10529-1","title":"libopenssl1_0_0-steam-1.0.2h-4.1 on GA media","description":"These are all security issues fixed in the libopenssl1_0_0-steam-1.0.2h-4.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:06:26.599598Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"openSUSE-SU-2024:11127-1","title":"libopenssl-1_1-devel-1.1.1l-1.2 on GA media","description":"These are all security issues fixed in the libopenssl-1_1-devel-1.1.1l-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:19.520287Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"UBUNTU-CVE-2015-1794","description":"The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.","status":"withdrawn","published":"2015-12-04T00:00:00Z","modified":"2026-02-04T03:33:33.266895Z","updated_at":"2026-11-02T15:54:10.045446Z"},{"id":"USN-2830-1","title":"openssl vulnerabilities","description":"Guy Leaver discovered that OpenSSL incorrectly handled a ServerKeyExchange\nfor an anonymous DH ciphersuite with the value of p set to 0. A remote\nattacker could possibly use this issue to cause OpenSSL to crash, resulting\nin a denial of service. This issue only applied to Ubuntu 15.10.\n(CVE-2015-1794)\n\nHanno Böck discovered that the OpenSSL Montgomery squaring procedure\nalgorithm may produce incorrect results when being used on x86_64. A remote\nattacker could possibly use this issue to break encryption. This issue only\napplied to Ubuntu 15.10. (CVE-2015-3193)\n\nLoïc Jonas Etienne discovered that OpenSSL incorrectly handled ASN.1\nsignatures with a missing PSS parameter. A remote attacker could possibly\nuse this issue to cause OpenSSL to crash, resulting in a denial of service.\n(CVE-2015-3194)\n\nAdam Langley discovered that OpenSSL incorrectly handled malformed\nX509_ATTRIBUTE structures. A remote attacker could possibly use this issue\nto cause OpenSSL to consume resources, resulting in a denial of service.\n(CVE-2015-3195)\n\nIt was discovered that OpenSSL incorrectly handled PSK identity hints. A\nremote attacker could possibly use this issue to cause OpenSSL to crash,\nresulting in a denial of service. This issue only applied to Ubuntu 12.04\nLTS, Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-3196)\n","status":"published","published":"2015-12-07T12:35:16Z","modified":"2026-04-22T09:18:42.190192Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}