{"id":"CVE-2013-4623","aliases":["DSA-2782-1","EUVD-2013-4479","GHSA-hfr2-452h-93q6","MGASA-2013-0290","UBUNTU-CVE-2013-4623"],"status":"published","title":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does...","description":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01887,"percentile":0.79668,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2013-09-24T21:41:53Z","modified":"2026-06-16T23:57:37Z","affected":[{"source":"osv","ecosystem":"Debian:6.0","package":"polarssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.9-1~deb6u1"}]}],"versions":["0.12.1-1","0.12.1-1squeeze1","0.14.3-1","1.0.0-1","1.0.0-2","1.0.0-2+s390x","1.0.0-3","1.1.0-1","1.1.1-1","1.1.2-1","1.1.3-1","1.1.4-1","1.1.4-2","1.2.0-1","1.2.2-1","1.2.3-1","1.2.4-1","1.2.5-1","1.2.6-1","1.2.7-1","1.2.8-1","1.2.8-2"],"bundled":3},{"source":"osv","ecosystem":"Debian:7","package":"polarssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.9-1~deb7u1"}]}],"versions":["1.1.4-2","1.2.0-1","1.2.2-1","1.2.3-1","1.2.4-1","1.2.5-1","1.2.6-1","1.2.7-1","1.2.8-1","1.2.8-2","1.2.9-1~deb6u1","1.2.9-1~deb6u2","1.2.9-1~deb6u3","1.2.9-1~deb6u4","1.2.9-1~deb6u5"],"bundled":3},{"source":"osv","ecosystem":"Mageia:3","package":"polarssl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8-1.mga3"}]}],"bundled":3}],"products":[{"vendor":"polarssl","product":"polarssl"}],"references":[{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-September/116351.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-03","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","report"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115922.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=997767","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115927.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"https://github.com/polarssl/polarssl/commit/1922a4e6aade7b1d685af19d4d9339ddb5c02859","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch"]},{"url":"http://www.debian.org/security/2013/dsa-2782","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"http://www.securityfocus.com/bid/61764","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4623"},{"url":"https://github.com/advisories/GHSA-hfr2-452h-93q6"},{"url":"https://advisories.mageia.org/MGASA-2013-0290.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=11275","tags":["report"]},{"url":"https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-01","tags":["advisory"]},{"url":"https://polarssl.org/tech-updates/releases/polarssl-1.2.6-released","tags":["web"]},{"url":"https://polarssl.org/tech-updates/releases/polarssl-1.2.7-released","tags":["web"]},{"url":"https://polarssl.org/tech-updates/releases/polarssl-1.2.8-released","tags":["web"]},{"url":"https://lists.fedoraproject.org/pipermail/package-announce/2013-September/115922.html","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2013-4623","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-4623","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2013-4623","description":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.","status":"published","published":"2013-09-30T20:00:00Z","modified":"2024-08-06T16:52:26.95Z","updated_at":"2026-11-02T14:34:57.869657Z"}],"euvd":[{"id":"EUVD-2013-4479","description":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.","status":"published","published":"2013-09-30T20:00:00Z","modified":"2024-08-06T16:52:26Z","updated_at":"2026-11-03T01:56:31.067159Z"}],"ghsa":[{"id":"GHSA-hfr2-452h-93q6","title":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does...","description":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.","status":"published","published":"2022-05-17T04:58:57Z","modified":"2023-01-28T05:02:57Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:43:52.645209Z"}],"nvd":[{"id":"CVE-2013-4623","description":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.","status":"published","published":"2013-09-30T22:55:04.93Z","modified":"2026-06-16T23:57:37.73Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:38.715467Z"}],"osv":[{"id":"DSA-2782-1","title":"polarssl - several","status":"published","published":"2013-10-20T00:00:00Z","modified":"2026-03-09T01:23:17.348474Z","updated_at":"2026-11-02T15:46:15.489951Z"},{"id":"MGASA-2013-0290","title":"Updated polarssl package fixes security vulnerabilities","description":"The TLS protocol 1.1 and 1.2 and the DTLS protocol 1.0 and 1.2, as used\nin PolarSSL before 1.2.6, does not properly consider timing side-channel\nattacks on a MAC check requirement during the processing of malformed CBC\npadding, which allows remote attackers to conduct distinguishing attacks\nand plaintext-recovery attacks via statistical analysis of timing data for\ncrafted packets, aka the \"Lucky Thirteen\" issue (CVE-2013-0169).\n\nArray index error in the SSL module in PolarSSL before 1.2.6 might allow\nremote attackers to cause a denial of service via vectors involving a\ncrafted padding-length value during validation of CBC padding in a TLS\nsession (CVE-2013-1621).\n\nA third party can set up a SSL/TLS handshake with a server and send a\nmalformed Certificate handshake message that results in an infinite loop\nfor that connection. With a Man-in-the-Middle attack on a client, a third\nparty can trigger the same infinite loop on a client (CVE-2013-4623).\n","status":"published","published":"2013-09-24T21:41:53Z","modified":"2026-04-16T06:22:41.361745608Z","updated_at":"2026-11-02T15:49:39.121227Z"},{"id":"UBUNTU-CVE-2013-4623","description":"The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.","status":"withdrawn","published":"2013-09-30T22:55:00Z","modified":"2025-07-16T07:31:24.615706Z","updated_at":"2026-11-02T15:54:07.421078Z"}]}}