High severity7.5NVD Advisory· Published Nov 6, 2020· Updated Jun 17, 2026
CVE-2020-28196
CVE-2020-28196
Description
MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
33- MIT/Kerberos 5description
- Range: <1.17.2, <1.18.3
- osv-coords31 versionspkg:rpm/opensuse/krb5&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/krb5&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/krb5&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/krb5-mini&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/krb5-mini&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/krb5&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/krb5&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/krb5&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/krb5&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/krb5&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/krb5&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/krb5&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 1.16.3-lp151.2.15.1+ 30 more
- (no CPE)range: < 1.16.3-lp151.2.15.1
- (no CPE)range: < 1.16.3-lp152.5.13.1
- (no CPE)range: < 1.19.2-3.1
- (no CPE)range: < 1.16.3-lp151.2.15.1
- (no CPE)range: < 1.16.3-lp152.5.13.1
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.15.2-6.12.2
- (no CPE)range: < 1.15.2-6.12.2
- (no CPE)range: < 1.16.3-3.15.1
- (no CPE)range: < 1.16.3-3.15.1
- (no CPE)range: < 1.16.3-3.15.1
- (no CPE)range: < 1.16.3-3.15.1
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.15.2-6.12.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.15.2-6.12.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
- (no CPE)range: < 1.12.5-40.40.2
Patches
Vulnerability mechanics
References
14- github.com/krb5/krb5/commit/57415dda6cf04e73ffc3723be518eddfae599bfdnvdPatchThird Party Advisory
- www.oracle.com//security-alerts/cpujul2021.htmlnvdPatchThird Party Advisory
- www.oracle.com/security-alerts/cpuApr2021.htmlnvdPatchThird Party Advisory
- www.oracle.com/security-alerts/cpuapr2022.htmlnvdPatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/11/msg00011.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202011-17nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20201202-0001/nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20210513-0002/nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4795nvdThird Party Advisory
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Envd
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Envd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/45KKOZQWIIIW5C45PJVGQ32AXBSYNBE7/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73IGOG6CZAVMVNS4GGRMOLOZ7B6QVA7F/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPH2V3WSQTELROZK3GFCPQDOFLKIZ6H5/nvd
News mentions
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