The asn1buf_skiptail function in the ASN.1 decoder library for MIT Kerberos 5 (krb5)…
Priority LOW 31Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The asn1buf_skiptail function in the ASN.1 decoder library for MIT Kerberos 5 (krb5) 1.2.2 through 1.3.4 allows remote attackers to cause a denial of service (infinite loop) via a certain BER encoding.
Why it matters now
EPSS 0.05585 92nd 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 · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mit:kerberos_5:1.2.2:*:*:*:*:*:*:* | 1.2.2 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.2.3:*:*:*:*:*:*:* | 1.2.3 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.2.4:*:*:*:*:*:*:* | 1.2.4 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.2.5:*:*:*:*:*:*:* | 1.2.5 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.2.6:*:*:*:*:*:*:* | 1.2.6 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.2.7:*:*:*:*:*:*:* | 1.2.7 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.2.8:*:*:*:*:*:*:* | 1.2.8 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.3:*:*:*:*:*:*:* | 1.3 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.3:alpha1:*:*:*:*:*:* | 1.3 alpha1 | Vulnerable | moos-ivp |
| cpe:2.3:a:mit:kerberos_5:1.3.1:*:*:*:*:*:*:* | 1.3.1 | Vulnerable | moos-ivp |
- cpe:2.3:a:mit:kerberos_5:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.2.4:*:*:*:*:*:*:* Versions 1.2.4 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.2.5:*:*:*:*:*:*:* Versions 1.2.5 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.2.6:*:*:*:*:*:*:* Versions 1.2.6 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.2.7:*:*:*:*:*:*:* Versions 1.2.7 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.2.8:*:*:*:*:*:*:* Versions 1.2.8 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.3:*:*:*:*:*:*:* Versions 1.3 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.3:alpha1:*:*:*:*:*:* Versions 1.3 alpha1 Vulnerable ·moos-ivp
- cpe:2.3:a:mit:kerberos_5:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·moos-ivp
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: Important. 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-2004-0644
- 2026-10-03 Alias added: GHSA-gh6c-7j72-v6m8
References
More moos-ivp Kerberos 5 vulnerabilities
- TI-2024-17421 Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c. CVSS 3.1HIGH 7.5
- TI-2001-00539 Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows… CVSS 2.0HIGH 10.0
- TI-2026-29130 NULL pointer dereference in moos-ivp Kerberos 5 CVSS 3.1HIGH 7.5
- TI-2007-00929 The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass… CVSS 2.0HIGH 10.0
- TI-2011-00268 The process_chpw_request function in schpw.c in the password-changing functionality in… CVSS 2.0HIGH 10.0
- TI-2001-00245 Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary… CVSS 2.0HIGH 10.0
Sources
- CVE-2004-0644 · CVE Program
- CVE-2004-0644 · NVD
- FIRST EPSS
- GHSA-gh6c-7j72-v6m8 · GitHub Advisory Database · CC BY 4.0
- CVE-2004-0644 · Red Hat security data · CC BY 4.0
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