CVE-2020-10595
pam_krb5: incorrect input handling results in single byte buffer overflow which may lead to heap corruption
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD. Niedriger laut Red Hat (mittel), Ubuntu (mittel).
Beschreibung
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.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| debian 10 | libpam-krb5 | 4.8-2+deb10u1 |
| debian 11 | libpam-krb5 | 4.9-1 |
| debian 12 | libpam-krb5 | 4.9-1 |
| debian 13 | libpam-krb5 | 4.9-1 |
| debian 14 | libpam-krb5 | 4.9-1 |
| debian 8 | libpam-krb5 | 4.6-3+deb8u1 |
| debian 9 | libpam-krb5 | 4.7-4+deb9u1 |
| echo | libpam-krb5 | 4.9-1 |
| ubuntu 14.04-ESM | libpam-krb5 | 4.6-2ubuntu0.1~esm1 |
| ubuntu 16.04 | libpam-krb5 | 4.7-2ubuntu0.1 |
| ubuntu 16.04-ESM | libpam-krb5 | 4.7-2ubuntu0.1 |
| ubuntu 18.04 | libpam-krb5 | 4.8-1ubuntu0.1 |
Alle 14 Einträge aus 14 Quellen zeigen
| Quelle | Paket | Behoben in |
|---|---|---|
| debian 10 | libpam-krb5 | 4.8-2+deb10u1 |
| debian 11 | libpam-krb5 | 4.9-1 |
| debian 12 | libpam-krb5 | 4.9-1 |
| debian 13 | libpam-krb5 | 4.9-1 |
| debian 14 | libpam-krb5 | 4.9-1 |
| debian 8 | libpam-krb5 | 4.6-3+deb8u1 |
| debian 9 | libpam-krb5 | 4.7-4+deb9u1 |
| echo | libpam-krb5 | 4.9-1 |
| ubuntu 14.04-ESM | libpam-krb5 | 4.6-2ubuntu0.1~esm1 |
| ubuntu 16.04 | libpam-krb5 | 4.7-2ubuntu0.1 |
| ubuntu 16.04-ESM | libpam-krb5 | 4.7-2ubuntu0.1 |
| ubuntu 18.04 | libpam-krb5 | 4.8-1ubuntu0.1 |
| ubuntu 18.04-ESM | libpam-krb5 | 4.8-1ubuntu0.1 |
| ubuntu 19.10 | libpam-krb5 | 4.8-2ubuntu0.1 |
Referenzen
- http://www.openwall.com/lists/oss-security/2020/03/31/1
- https://access.redhat.com/security/cve/CVE-2020-10595
- https://github.com/rra/pam-krb5/commit/e7879e27a37119fad4faf133a9f70bdcdc75d760
- https://lists.debian.org/debian-lts-announce/2020/04/msg00000.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-10595
- https://ubuntu.com/security/notices/USN-4314-1
- https://usn.ubuntu.com/4314-1/
- https://www.cve.org/CVERecord?id=CVE-2020-10595