CVE-2020-28196
First published: Fri Nov 06 2020(Updated: )
MIT Kerberos 5 (aka krb5) is vulnerable to a denial of service, caused by an unbounded recursion flaw in lib/krb5/asn.1/asn1_encode.c. By sending a specially-crafted ASN.1-encoded Kerberos message, a remote attacker could exploit this vulnerability to cause a denial of service condition.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/krb5 | <0:1.18.2-8.el8 | 0:1.18.2-8.el8 |
| redhat/redhat-virtualization-host | <0:4.4.6-20210527.3.el8_4 | 0:4.4.6-20210527.3.el8_4 |
| debian/krb5 | 1.17-3+deb10u4 1.17-3+deb10u5 1.18.3-6+deb11u4 1.18.3-6+deb11u3 1.20.1-2+deb12u1 1.20.1-4 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.2.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.0.0 | |
| redhat/krb5 | <1.17.2 | 1.17.2 |
| redhat/krb5 | <1.18.3 | 1.18.3 |
| MIT Kerberos 5 | <1.17.2 | |
| MIT Kerberos 5 | >=1.18.0<1.18.3 | |
| Fedoraproject Fedora | =31 | |
| Netapp Active Iq Unified Manager Vmware Vsphere | ||
| Netapp Active Iq Unified Manager Windows | ||
| Netapp Cloud Backup | ||
| NetApp OnCommand Insight | ||
| NetApp OnCommand Workflow Automation | ||
| Netapp Snapcenter | ||
| Oracle Communications Cloud Native Core Policy | =1.14.0 | |
| Oracle Communications Offline Mediation Controller | =12.0.0.3.0 | |
| Oracle Communications Pricing Design Center | =12.0.0.3.0 | |
| Oracle Mysql Server | <=8.0.23 |
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Reference Links
- https://exchange.xforce.ibmcloud.com/vulnerabilities/191321
- https://www.ibm.com/support/pages/node/6493729 (Advisory)
- https://github.com/krb5/krb5/commit/57415dda6cf04e73ffc3723be518eddfae599bfd
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/11/msg00011.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/45KKOZQWIIIW5C45PJVGQ32AXBSYNBE7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/73IGOG6CZAVMVNS4GGRMOLOZ7B6QVA7F/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KPH2V3WSQTELROZK3GFCPQDOFLKIZ6H5/
- https://security.gentoo.org/glsa/202011-17
- https://security.netapp.com/advisory/ntap-20201202-0001/
- https://security.netapp.com/advisory/ntap-20210513-0002/
- https://www.debian.org/security/2020/dsa-4795
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://krbdev.mit.edu/rt/Ticket/Display.html?id=8959
- https://access.redhat.com/errata/RHSA-2021:1593
- https://access.redhat.com/security/cve/cve-2020-28196
- https://access.redhat.com/errata/RHSA-2021:2239
- https://bugzilla.redhat.com/show_bug.cgi?id=1901041
- https://www.cve.org/CVERecord?id=CVE-2020-28196 https://nvd.nist.gov/vuln/detail/CVE-2020-28196
- https://security-tracker.debian.org/tracker/CVE-2020-28196
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