Debian Security Advisory DSA-4944-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
July 25, 2021 https://www.debian.org/security/faq
Package : krb5
CVE ID : CVE-2021-36222
Debian Bug : 991365
It was discovered that the Key Distribution Center (KDC) in krb5, the
MIT implementation of Kerberos, is prone to a NULL pointer dereference
flaw. An unauthenticated attacker can take advantage of this flaw to
cause a denial of service (KDC crash) by sending a request containing a
PA-ENCRYPTED-CHALLENGE padata element without using FAST.
For the stable distribution (buster), this problem has been fixed in
version 1.17-3+deb10u2.
We recommend that you upgrade your krb5 packages.
For the detailed security status of krb5 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/krb5
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | arm64 | libk5crypto3 | < 1.17-3+deb10u2 | libk5crypto3_1.17-3+deb10u2_arm64.deb |
Debian | 10 | mipsel | krb5-kdc-dbgsym | < 1.17-3+deb10u2 | krb5-kdc-dbgsym_1.17-3+deb10u2_mipsel.deb |
Debian | 10 | amd64 | krb5-kdc-dbgsym | < 1.17-3+deb10u2 | krb5-kdc-dbgsym_1.17-3+deb10u2_amd64.deb |
Debian | 10 | ppc64el | libkrad0 | < 1.17-3+deb10u2 | libkrad0_1.17-3+deb10u2_ppc64el.deb |
Debian | 10 | s390x | libgssrpc4 | < 1.17-3+deb10u2 | libgssrpc4_1.17-3+deb10u2_s390x.deb |
Debian | 10 | mipsel | libgssrpc4 | < 1.17-3+deb10u2 | libgssrpc4_1.17-3+deb10u2_mipsel.deb |
Debian | 10 | mips | libkrad0 | < 1.17-3+deb10u2 | libkrad0_1.17-3+deb10u2_mips.deb |
Debian | 10 | amd64 | krb5-otp-dbgsym | < 1.17-3+deb10u2 | krb5-otp-dbgsym_1.17-3+deb10u2_amd64.deb |
Debian | 10 | mips | libkadm5clnt-mit11 | < 1.17-3+deb10u2 | libkadm5clnt-mit11_1.17-3+deb10u2_mips.deb |
Debian | 10 | armel | libkrb5support0 | < 1.17-3+deb10u2 | libkrb5support0_1.17-3+deb10u2_armel.deb |