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Fencer Intel
critical 9.8

CVE-2017-11462 json

Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion…

published 9y ago modified 4mo ago also EUVD-2017-3083

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion of security contexts on error.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.15.2-1

debian advisories DEBIAN-CVE-2017-11462

  • krb5 Ubuntu 14.04 LTS 1.12+dfsg-2ubuntu5.4
  • krb5 Ubuntu 16.04 LTS 1.13.2+dfsg-5ubuntu2.1

ubuntu advisories UBUNTU-CVE-2017-11462

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • krb5 SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.6.3-133.49.113.7.1
  • krb5 SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +6 more 1.12.5-40.13.1

suse advisories SUSE-SU-2018:0859-1SUSE-SU-2017:2659-1

  • krb5 openSUSE Tumbleweed 1.19.2-2.2

opensuse advisories openSUSE-SU-2024:10899-1

  • krb5 Arch Linux 1.15.2-1
  • lib32-krb5 Arch Linux 1.15.2-1

arch linux advisories AVG-414AVG-415

Is CVE-2017-11462 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-11462 updated cvss 3.7

krb5: Automatic sec context deletion could lead to double-free

  • Red Hat Enterprise Linux 5 krb5 Red Hat Enterprise Linux 6 krb5, libkadm5, krb5-libs, krb5-server, krb5-server-ldap, krb5-workstation, +1 more Red Hat Enterprise Linux 7 krb5, libkadm5, krb5-libs, krb5-pkinit, krb5-server, krb5-server-ldap, +1 more Red Hat JBoss Enterprise Application Platform 6 krb5 Red Hat JBoss Enterprise Web Server 2 krb5 Red Hat JBoss Enterprise Web Server 3 krb5
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.48% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.