OESA-2026-4300

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4300

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-4300.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-4300

Upstream

CVE-2026-107161

Published

2026-10-16T11:59:06Z

Modified

2026-10-16T12:15:18Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator

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.

Security Fix(es):

A 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)

Database specific

{
    "severity":  "High"
}

References

Affected packages

openEuler:24.03-LTS-SP4 / cyrus-sasl

Package

Name: cyrus-sasl
Purl: pkg:rpm/openEuler/cyrus-sasl&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

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"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-4300.json"