Catalogo CVE
CVE-2020-10595
libpam-krb5: CVE-2020-10595
- Gravità
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 4.78% · Oct 22, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libpam-krb5 | sid | 4.11-2 | fixed |
| Debian | libpam-krb5 | forky | 4.11-2 | fixed |
| Debian | libpam-krb5 | trixie | 4.11-2 | fixed |
| Debian | libpam-krb5 | bookworm | 4.11-1 | fixed |
| Ubuntu | libpam-krb5 | pro | 4.6-2 | vulnerable |
| Ubuntu | libpam-krb5 | pro | 4.6-2ubuntu0.1~esm1 | fixed |
| Ubuntu | libpam-krb5 | 16.04 | 4.7-2 | vulnerable |
| Ubuntu | libpam-krb5 | 16.04 | 4.7-2ubuntu0.1 | fixed |
| Ubuntu | libpam-krb5 | 18.04 | 4.7-4 | vulnerable |
| Ubuntu | libpam-krb5 | 18.04 | 4.8-1 | vulnerable |
| Ubuntu | libpam-krb5 | 18.04 | 4.8-1ubuntu0.1 | fixed |
| Ubuntu | libpam-krb5 | pro | 4.6-2 | vulnerable |
| Ubuntu | libpam-krb5 | pro | 4.6-2ubuntu0.1~esm1 | fixed |
| Ubuntu | libpam-krb5 | 16.04 | 4.7-2 | vulnerable |
| Ubuntu | libpam-krb5 | 16.04 | 4.7-2ubuntu0.1 | fixed |
| Ubuntu | libpam-krb5 | 18.04 | 4.7-4 | vulnerable |
| Ubuntu | libpam-krb5 | 18.04 | 4.8-1 | vulnerable |
| Ubuntu | libpam-krb5 | 18.04 | 4.8-1ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libpam-krb5 | source | sid | 4.9-1 | not yet assigned | Not reported | Not reported |
| Debian | libpam-krb5 | source | forky | 4.9-1 | not yet assigned | Not reported | Not reported |
| Debian | libpam-krb5 | source | trixie | 4.9-1 | not yet assigned | Not reported | Not reported |
| Debian | libpam-krb5 | source | bookworm | 4.9-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | libpam-krb5 | deb | pro | 4.6-2ubuntu0.1~esm1 | Not reported | USN-4314-1 | Not reported |
| Ubuntu | libpam-krb5 | deb | 16.04 | 4.7-2ubuntu0.1 | Not reported | USN-4314-1 | Not reported |
| Ubuntu | libpam-krb5 | deb | 18.04 | 4.8-1ubuntu0.1 | Not reported | USN-4314-1 | Not reported |
| Ubuntu | libpam-krb5 | deb | pro | 4.6-2ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2020-10595 | Not reported |
| Ubuntu | libpam-krb5 | deb | 16.04 | 4.7-2ubuntu0.1 | Not reported | UBUNTU-CVE-2020-10595 | Not reported |
| Ubuntu | libpam-krb5 | deb | 18.04 | 4.8-1ubuntu0.1 | Not reported | UBUNTU-CVE-2020-10595 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libpam-heimdal]Corretta
Pacchetto sorgente: [libpam-krb5]
Dettagli (2)
4.11-1+b1· amd64 · bookwormCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · bookworm; dsa · libpam-krb5 · debian · 12
4.11-1+b1· arm64 · bookwormCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · bookworm; dsa · libpam-krb5 · debian · 12
- [libpam-krb5]Corretta
Pacchetto sorgente: [libpam-krb5]
Dettagli (2)
4.11-1+b1· amd64 · bookwormCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · bookworm; dsa · libpam-krb5 · debian · 12
4.11-1+b1· arm64 · bookwormCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · bookworm; dsa · libpam-krb5 · debian · 12
[Debian 13 (Trixie)]
- [libpam-heimdal]Corretta
Pacchetto sorgente: [libpam-krb5]
Dettagli (2)
4.11-2+b1· amd64 · trixieCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · 13
4.11-2+b1· arm64 · trixieCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · 13
- [libpam-krb5]Corretta
Pacchetto sorgente: [libpam-krb5]
Dettagli (2)
4.11-2+b1· amd64 · trixieCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · 13
4.11-2+b1· arm64 · trixieCorretta · Corretta:
4.9-1dsa · libpam-krb5 · debian · 13
Osservato:
Riferimenti
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-10595]
- [https://osv.dev/vulnerability/DLA-2166-1]
- [https://osv.dev/vulnerability/DSA-4648-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-10595]
- [https://osv.dev/vulnerability/USN-4314-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-10595]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]