{"id":"CVE-2021-27506","aliases":["EUVD-2021-14260","GHSA-rfvf-cm38-cvx4","OESA-2021-1187"],"status":"published","title":"In Stormshield Network Security (SNS) 1.0 through 4.2.0, the parsing of some malformed files can...","description":"The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01312,"percentile":0.71103,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2021-03-19T14:28:20Z","modified":"2026-10-24T10:30:23Z","fixes":[{"ecosystem":"openEuler:20.03-LTS-SP1","package":"clamav","fixed_in":["0.103.2-1.oe1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"clamav","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.103.2-1.oe1"}]}]}],"products":[{"vendor":"clamav","product":"clamav"},{"vendor":"netasq_project","product":"netasq"},{"vendor":"stormshield","product":"stormshield_network_security"}],"references":[{"url":"https://advisories.stormshield.eu/2021-003/","tags":["x_refsource_CONFIRM","x_transferred","Broken Link","Vendor Advisory","advisory"]},{"url":"https://blog.clamav.net/2021/02/clamav-01031-patch-release.html","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27506","tags":["advisory"]},{"url":"https://advisories.stormshield.eu/2021-003"},{"url":"https://github.com/advisories/GHSA-rfvf-cm38-cvx4"},{"url":"https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1187","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-27506","description":"The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.","status":"published","published":"2021-03-19T14:28:20Z","modified":"2024-08-03T21:26:09.16Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14260","description":"The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.","status":"published","published":"2021-03-19T14:28:20Z","modified":"2024-08-03T21:26:09Z","updated_at":"2026-11-03T03:24:48.919164Z"}],"ghsa":[{"id":"GHSA-rfvf-cm38-cvx4","title":"In Stormshield Network Security (SNS) 1.0 through 4.2.0, the parsing of some malformed files can...","description":"In Stormshield Network Security (SNS) 1.0 through 4.2.0, the parsing of some malformed files can lead to the crash of ClamAV service causing a Denial of Service.","status":"published","published":"2022-05-24T17:44:55Z","modified":"2024-08-20T15:33:16Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T14:58:01.327673Z"}],"nvd":[{"id":"CVE-2021-27506","description":"The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.","status":"published","published":"2021-03-19T15:15:12.65Z","modified":"2026-06-17T03:44:59.933Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:50.805771Z"}],"osv":[{"id":"CVE-2021-27506","description":"The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.","status":"published","published":"2021-03-19T15:15:12.65Z","modified":"2026-10-24T10:30:23.072035897Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:19.129331Z"},{"id":"OESA-2021-1187","title":"clamav security update","description":"Clam AntiVirus (clamav) is an open source antivirus engine for detecting trojans, viruses, malware \u0026amp; other malicious threats. The main purpose of this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon, a command line scanner, and a tool for automatic updating via Internet. The programs are based on a shared library distributed with the Clam AntiVirus package, which you can use with your own software. he virus database is based on the virus database from OpenAntiVirus, but contains additional signatures and is KEPT UP TO DATE.\r\n\r\nSecurity Fix(es):\r\n\r\nThe ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.(CVE-2021-27506)","status":"published","published":"2021-05-15T11:04:25Z","modified":"2026-08-18T01:15:31.097660499Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:38.987987Z"}]}}