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CVE-2020-10595

CVE-2020-10595

This page contains facts from public vulnerability sources. Check the original advisory before updating.

pam-krb5 before 4.9 has a buffer overflow that might cause remote code execution in situations involving supplemental prompting by a Kerberos library. It may overflow a buffer provided by the underlying Kerberos library by a single '\0' byte if an attacker responds to a prompt with an answer of a carefully chosen length. The effect may range from heap corruption to stack corruption depending on the structure of the underlying Kerberos library, with unknown effects but possibly including code execution. This code path is not used for normal authentication, but only when the Kerberos library does supplemental prompting, such as with PKINIT or when using the non-standard no_prompt PAM configuration option.

CVSS 9.8 · Critical · EPSS 4.8% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • libpam-krb5 Debian:12

    Affected ranges
    • ECOSYSTEM: < 4.9-1

    Update to 4.9-1

  • libpam-krb5 Debian:13

    Affected ranges
    • ECOSYSTEM: < 4.9-1

    Update to 4.9-1

  • libpam-krb5 Debian:14

    Affected ranges
    • ECOSYSTEM: < 4.9-1

    Update to 4.9-1

  • libpam-krb5 Ubuntu:Pro:14.04:LTS

    Versions
    • 4.6-2
    Affected ranges
    • ECOSYSTEM: < 4.6-2ubuntu0.1~esm1

    Update to 4.6-2ubuntu0.1~esm1

  • libpam-krb5 Ubuntu:16.04:LTS

    Versions
    • 4.7-2
    Affected ranges
    • ECOSYSTEM: < 4.7-2ubuntu0.1

    Update to 4.7-2ubuntu0.1

  • libpam-krb5 Ubuntu:18.04:LTS

    Versions
    • 4.7-4
    • 4.8-1
    Affected ranges
    • ECOSYSTEM: < 4.8-1ubuntu0.1

    Update to 4.8-1ubuntu0.1

Original sources

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