CVE-2025-3576
CVE-2025-3576 · Krb5: kerberos rc4-hmac-md5 checksum vulnerability enabling message spoofing via md5 collisions
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.
CVSS 5.9 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
red hat enterprise linux 10
- Versions
- ≥ 0:1.21.3-8.el10_0: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 0:1.18.2-32.el8_10: Not affected (rpm)
No fix published
red hat enterprise linux 8.2 advanced update support
- Versions
- ≥ 0:1.17-19.el8_2.3: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 0:1.18.2-9.el8_4.3: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 0:1.18.2-9.el8_4.3: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 0:1.18.2-16.el8_6.4: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 telecommunications update service
- Versions
- ≥ 0:1.18.2-16.el8_6.4: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 update services for sap solutions
- Versions
- ≥ 0:1.18.2-16.el8_6.4: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 0:1.18.2-26.el8_8.5: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 0:1.18.2-26.el8_8.5: Not affected (rpm)
No fix published
red hat enterprise linux 9
- Versions
- ≥ 0:1.21.1-8.el9_6: Not affected (rpm)
No fix published
red hat enterprise linux 9.0 update services for sap solutions
- Versions
- ≥ 0:1.19.1-16.el9_0.4: Not affected (rpm)
No fix published
red hat enterprise linux 9.2 update services for sap solutions
- Versions
- ≥ 0:1.20.1-9.el9_2.3: Not affected (rpm)
No fix published
red hat enterprise linux 9.4 extended update support
- Versions
- ≥ 0:1.21.1-2.el9_4.2: Not affected (rpm)
No fix published
red hat discovery 2
- Versions
- ≥ 2.0.0-1752592913: Not affected (rpm)
No fix published
red hat enterprise linux 6
No fix published
red hat enterprise linux 7
No fix published
red hat openshift container platform 4
No fix published
krb5 Debian:12
- Versions
- 1.20.1-2
- 1.20.1-2+deb12u1
- 1.20.1-2+deb12u2
- 1.20.1-2+deb12u3
- Affected ranges
- ECOSYSTEM: < 1.20.1-2+deb12u4
Update to 1.20.1-2+deb12u4
krb5 Debian:13
- Affected ranges
- ECOSYSTEM: < 1.21.2-1
Update to 1.21.2-1
krb5 Debian:14
- Affected ranges
- ECOSYSTEM: < 1.21.2-1
Update to 1.21.2-1
krb5 Ubuntu:Pro:14.04:LTS
- Versions
- 1.10.1+dfsg-6.1ubuntu1
- 1.11.3+dfsg-3ubuntu2
- 1.12+dfsg-2ubuntu1
- 1.12+dfsg-2ubuntu2
- 1.12+dfsg-2ubuntu3
- 1.12+dfsg-2ubuntu4
- 1.12+dfsg-2ubuntu4.2
- 1.12+dfsg-2ubuntu5
- 1.12+dfsg-2ubuntu5.1
- 1.12+dfsg-2ubuntu5.2
- 1.12+dfsg-2ubuntu5.3
- 1.12+dfsg-2ubuntu5.4
- 1.12+dfsg-2ubuntu5.4+esm1
- 1.12+dfsg-2ubuntu5.4+esm2
- 1.12+dfsg-2ubuntu5.4+esm3
- 1.12+dfsg-2ubuntu5.4+esm4
- 1.12+dfsg-2ubuntu5.4+esm5
- 1.12+dfsg-2ubuntu5.4+esm6
- Affected ranges
- ECOSYSTEM: < 1.12+dfsg-2ubuntu5.4+esm7
Update to 1.12+dfsg-2ubuntu5.4+esm7
krb5 Ubuntu:Pro:16.04:LTS
- Versions
- 1.13.2+dfsg-2
- 1.13.2+dfsg-3
- 1.13.2+dfsg-4
- 1.13.2+dfsg-5
- 1.13.2+dfsg-5ubuntu1
- 1.13.2+dfsg-5ubuntu2
- 1.13.2+dfsg-5ubuntu2.1
- 1.13.2+dfsg-5ubuntu2.1+esm1
- 1.13.2+dfsg-5ubuntu2.2
- 1.13.2+dfsg-5ubuntu2.2+esm3
- 1.13.2+dfsg-5ubuntu2.2+esm4
- 1.13.2+dfsg-5ubuntu2.2+esm5
- 1.13.2+dfsg-5ubuntu2.2+esm6
- Affected ranges
- ECOSYSTEM: < 1.13.2+dfsg-5ubuntu2.2+esm7
Update to 1.13.2+dfsg-5ubuntu2.2+esm7
krb5 Ubuntu:Pro:18.04:LTS
- Versions
- 1.15.1-2
- 1.16-2
- 1.16-2build1
- 1.16-2ubuntu0.1
- 1.16-2ubuntu0.1+esm1
- 1.16-2ubuntu0.2
- 1.16-2ubuntu0.3
- 1.16-2ubuntu0.4
- 1.16-2ubuntu0.4+esm1
- 1.16-2ubuntu0.4+esm2
- 1.16-2ubuntu0.4+esm3
- Affected ranges
- ECOSYSTEM: < 1.16-2ubuntu0.4+esm5
Update to 1.16-2ubuntu0.4+esm5
Original sources
- https://access.redhat.com/errata/RHSA-2025:11487
- https://access.redhat.com/errata/RHSA-2025:13664
- https://access.redhat.com/errata/RHSA-2025:13777
- https://access.redhat.com/errata/RHSA-2025:15000
- https://access.redhat.com/errata/RHSA-2025:15001
- https://access.redhat.com/errata/RHSA-2025:15002
- https://access.redhat.com/errata/RHSA-2025:15003
- https://access.redhat.com/errata/RHSA-2025:15004
- https://access.redhat.com/errata/RHSA-2025:8411
- https://access.redhat.com/errata/RHSA-2025:9418
- https://access.redhat.com/errata/RHSA-2025:9430
- https://access.redhat.com/security/cve/CVE-2025-3576
- https://bugzilla.redhat.com/show_bug.cgi?id=2359465
- https://web.mit.edu/kerberos/krb5-1.22/krb5-1.22.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00047.html
- https://cert-portal.siemens.com/productcert/html/ssa-577017.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-3576