Double free vulnerabilities in the error handling code for ASN.1 decoders in the (1) Key…
Priority MEDIUM 44CWE-415Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-415 and the CVSS impact.
Summary
Double free vulnerabilities in the error handling code for ASN.1 decoders in the (1) Key Distribution Center (KDC) library and (2) client library for MIT Kerberos 5 (krb5) 1.3.4 and earlier may allow remote attackers to execute arbitrary code.
Why it matters now
EPSS 0.08257 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* | up to 1.3.4 | Vulnerable | moos-ivp |
| cpe:2.3:o:debian:debian_linux:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Debian |
| cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Red Hat |
- cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* Versions up to 1.3.4 Vulnerable ·moos-ivp
- cpe:2.3:o:debian:debian_linux:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Debian
- cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2004:350 Released 2004-08-31 · Red Hat rating Criticalkrb5 security update
- Red Hat Desktop version 3 krb5-1.2.7-28, krb5-devel-1.2.7-28, krb5-devel-1.2.7-28.i386 +6
- Red Hat Enterprise Linux AS version 3 krb5-1.2.7-28, krb5-devel-1.2.7-28, krb5-devel-1.2.7-28.i386 +14
- Red Hat Enterprise Linux ES version 3 krb5-1.2.7-28, krb5-devel-1.2.7-28, krb5-devel-1.2.7-28.i386 +10
- Red Hat Enterprise Linux WS version 3 krb5-1.2.7-28, krb5-devel-1.2.7-28, krb5-devel-1.2.7-28.i386 +10
- RHSA-2004:448 Released 2004-08-31 · Red Hat rating Criticalkrb5 security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- Red Hat Enterprise Linux ES version 2.1
- Red Hat Enterprise Linux WS version 2.1
- Red Hat Linux Advanced Workstation 2.1
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2004:350 |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2004:448 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2004:350 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2004:448 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2004:350 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2004:448 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2004:350 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2004:448 |
Timeline
- 2026-10-02 Threatist record created from CVE-2004-0642
- 2026-10-03 Alias added: GHSA-9vx5-gccr-9gr3
References
Sources
- CVE-2004-0642 · CVE Program
- CVE-2004-0642 · NVD
- FIRST EPSS
- GHSA-9vx5-gccr-9gr3 · GitHub Advisory Database · CC BY 4.0
- CVE-2004-0642 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences