CVE-2021-44758
libkdc2-heimdal: Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_t...
CVE-2021-44758 is fixed in 23 products on 1 platform, first by heimdal-clients 7.5.0+dfsg-1ubuntu0.3, released December 25, 2022. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0133
71st percentile
Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| heimdal · Debian 12.15 (bookworm) | 7.8.git20221115.a6cf945+dfsg-1 | DEBIAN-CVE-2021-44758 | Dec 26, 2022 |
| heimdal · Debian 13.5 (trixie) | 7.8.git20221115.a6cf945+dfsg-1 | DEBIAN-CVE-2021-44758 | Dec 26, 2022 |
| heimdal · Debian 14 | 7.8.git20221115.a6cf945+dfsg-1 | DEBIAN-CVE-2021-44758 | Dec 26, 2022 |
| heimdal-clients · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | heimdal-clients 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| heimdal-clients · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | heimdal-clients 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| heimdal-docs · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | heimdal-docs 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| heimdal-docs · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | heimdal-docs 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| heimdal-kcm · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | heimdal-kcm 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| heimdal-kcm · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | heimdal-kcm 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| heimdal-kdc · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | heimdal-kdc 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| heimdal-kdc · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | heimdal-kdc 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| heimdal-multidev · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | heimdal-multidev 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| heimdal-multidev · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | heimdal-multidev 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| heimdal-servers · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | heimdal-servers 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| heimdal-servers · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | heimdal-servers 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libasn1-8-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libasn1-8-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libasn1-8-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libasn1-8-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libgssapi3-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libgssapi3-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libgssapi3-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libgssapi3-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libhcrypto4-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libhcrypto4-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libhcrypto4-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libhcrypto4-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libhdb9-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libhdb9-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libhdb9-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libhdb9-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libheimbase1-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libheimbase1-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libheimbase1-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libheimbase1-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libheimntlm0-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libheimntlm0-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libheimntlm0-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libheimntlm0-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libhx509-5-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libhx509-5-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libhx509-5-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libhx509-5-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libkadm5clnt7-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libkadm5clnt7-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libkadm5clnt7-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libkadm5clnt7-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libkadm5srv8-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libkadm5srv8-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libkadm5srv8-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libkadm5srv8-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libkafs0-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libkafs0-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libkafs0-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libkafs0-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libkdc2-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libkdc2-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libkdc2-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libkdc2-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libkrb5-26-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libkrb5-26-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libkrb5-26-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libkrb5-26-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libotp0-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libotp0-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libotp0-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libotp0-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libroken18-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libroken18-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libroken18-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libroken18-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libsl0-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libsl0-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libsl0-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libsl0-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
| libwind0-heimdal · Ubuntu 18.04.6 LTS (bionic) | 7.5.0+dfsg-1ubuntu0.3 | libwind0-heimdal 7.5.0+dfsg-1ubuntu0.3 | Dec 25, 2022 |
| libwind0-heimdal · Ubuntu 20.04 LTS (focal) | 7.7.0+dfsg-1ubuntu1.3 | libwind0-heimdal 7.7.0+dfsg-1ubuntu1.3 | Dec 25, 2022 |
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