OESA-2026-2901

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2901

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-2901.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-2901

Upstream

CVE-2026-54411

Published

2026-07-09T12:49:50Z

Modified

2026-07-09T13:00:10.801967176Z

Summary

pam security update

Details

PAM (Pluggable Authentication Modules) is a system of libraries that handle the authentication tasks of applications (services) on the system.

Security Fix(es):

Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pamuserdb module's plaintext-password comparison path in modules/pamuserdb/pamuserdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover the plaintext password of a target account by measuring response-timing differences. The comparison uses strncmp() (or strncasecmp() when PAMICASEARG is set) preceded by a length-equality check, so the time to reject a candidate depends on the index of the first differing byte and on whether the candidate's length matches the stored password, leaking the password length and individual prefix bytes. The vulnerable path is reached when the administrator configures pamuserdb with crypt=none, with an unrecognized crypt method, or without a crypt= argument, causing the module to store and compare credentials in plaintext.(CVE-2026-54411)

Database specific

{
    "severity": "Medium"
}

References

Affected packages

openEuler:22.03-LTS-SP4 / pam

Package

Name: pam
Purl: pkg:rpm/openEuler/pam&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.5.2-17.oe2203sp4

Ecosystem specific

{
    "x86_64": [
        "pam-1.5.2-17.oe2203sp4.x86_64.rpm",
        "pam-debuginfo-1.5.2-17.oe2203sp4.x86_64.rpm",
        "pam-debugsource-1.5.2-17.oe2203sp4.x86_64.rpm",
        "pam-devel-1.5.2-17.oe2203sp4.x86_64.rpm"
    ],
    "src": [
        "pam-1.5.2-17.oe2203sp4.src.rpm"
    ],
    "aarch64": [
        "pam-1.5.2-17.oe2203sp4.aarch64.rpm",
        "pam-debuginfo-1.5.2-17.oe2203sp4.aarch64.rpm",
        "pam-debugsource-1.5.2-17.oe2203sp4.aarch64.rpm",
        "pam-devel-1.5.2-17.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "pam-help-1.5.2-17.oe2203sp4.noarch.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-2901.json"