CVE-2010-4020
MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature,
02 Description
MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature,
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.91% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 79.4% of scored records. A rank, not a probability.
- NVD base score
- 6.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2010-12-02 16:00Z15 YR AGO
- Last updated
- 2024-08-07 03:26Z2 YR AGO
- Reserved
- 2010-10-20
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 3eb1c068a23db4b222fd2292811e9e4d6a24816bb4ffce8a4e6da9134b266e6e
05 Affected products
06 References
- www.vupen.comADV-2010-3094http://www.vupen.com/english/advisories/2010/3094
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
- www.mandriva.comMDVSA-2010:246http://www.mandriva.com/security/advisories?name=MDVSA-2010:246
- lists.fedoraproject.orgFEDORA-2010-18425http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html
- kb.vmware.comhttp://kb.vmware.com/kb/1035108
- www.vupen.comADV-2010-3118http://www.vupen.com/english/advisories/2010/3118
- www.securityfocus.com20101130 MITKRB5-SA-2010-007 Multiple checksum handling vulnerabilities [CVE-2010-1324 CVE-2010-1323 CVE-2010-4020 CVE-2010-4021]http://www.securityfocus.com/archive/1/514953/100/0/threaded
- lists.opensuse.orgSUSE-SR:2010:023http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html
- www.vmware.comhttp://www.vmware.com/security/advisories/VMSA-2011-0007.html
- lists.apple.comAPPLE-SA-2011-03-21-1http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
- web.mit.eduhttp://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt
- www.vupen.comADV-2010-3095http://www.vupen.com/english/advisories/2010/3095
- secunia.com42399http://secunia.com/advisories/42399
- lists.vmware.com[security-announce] 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Consolehttp://lists.vmware.com/pipermail/security-announce/2011/000133.html
- www.securitytracker.com1024803http://www.securitytracker.com/id?1024803
- www.securityfocus.com20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Consolehttp://www.securityfocus.com/archive/1/517739/100/0/threaded
- lists.fedoraproject.orgFEDORA-2010-18409http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html
- lists.opensuse.orgSUSE-SR:2010:024http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
- www.redhat.comRHSA-2010:0925http://www.redhat.com/support/errata/RHSA-2010-0925.html
- www.ubuntu.comUSN-1030-1http://www.ubuntu.com/usn/USN-1030-1
- osvdb.org69608http://osvdb.org/69608
- www.securityfocus.com45117http://www.securityfocus.com/bid/45117
- support.apple.comhttp://support.apple.com/kb/HT4581
07 Fixed in
Debian 12
- krb5 Fixed in 1.8.3+dfsg-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- krb5 Fixed in 1.8.3+dfsg-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- krb5 Fixed in 1.8.3+dfsg-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.