{"schema_version":"1.7.2","id":"OESA-2026-4300","modified":"2026-10-16T11:59:06Z","published":"2026-10-16T11:59:06Z","upstream":["CVE-2026-107161"],"summary":"cyrus-sasl security update","details":"The  package contains the Cyrus implementation of SASL. SASL is the Simple Authentication and Security Layer, a method for adding authentication support to connection-based protocols.\r\n\r\nSecurity Fix(es):\n\nA heap-based buffer overflow flaw was found in Cyrus SASL. The add_to_challenge() function in the DIGEST-MD5 plugin computes the size of the buffer needed for a challenge/response field before DIGEST-MD5 quoting is applied, but does not recompute that size when quoting (escaping special characters) makes the value longer. The under-sized buffer is then passed to strcat(), causing a heap-based out-of-bounds write whose size depends on attacker-controlled input. A malicious or on-path DIGEST-MD5 (or HTTP Digest) server can trigger this flaw in a connecting client by supplying a crafted challenge field, such as realm or nonce, most likely resulting in a crash of the client application.(CVE-2026-107161)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP4","name":"cyrus-sasl","purl":"pkg:rpm/openEuler/cyrus-sasl&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.28-12.oe2403sp4"}]}],"ecosystem_specific":{"aarch64":["cyrus-sasl-2.1.28-12.oe2403sp4.aarch64.rpm","cyrus-sasl-debuginfo-2.1.28-12.oe2403sp4.aarch64.rpm","cyrus-sasl-debugsource-2.1.28-12.oe2403sp4.aarch64.rpm","cyrus-sasl-devel-2.1.28-12.oe2403sp4.aarch64.rpm","cyrus-sasl-lib-2.1.28-12.oe2403sp4.aarch64.rpm","cyrus-sasl-sql-2.1.28-12.oe2403sp4.aarch64.rpm"],"noarch":["cyrus-sasl-help-2.1.28-12.oe2403sp4.noarch.rpm"],"src":["cyrus-sasl-2.1.28-12.oe2403sp4.src.rpm"],"x86_64":["cyrus-sasl-2.1.28-12.oe2403sp4.x86_64.rpm","cyrus-sasl-debuginfo-2.1.28-12.oe2403sp4.x86_64.rpm","cyrus-sasl-debugsource-2.1.28-12.oe2403sp4.x86_64.rpm","cyrus-sasl-devel-2.1.28-12.oe2403sp4.x86_64.rpm","cyrus-sasl-lib-2.1.28-12.oe2403sp4.x86_64.rpm","cyrus-sasl-sql-2.1.28-12.oe2403sp4.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4300"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107161"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}],"database_specific":{"severity":"High"}}