CVE-2022-44640 Use after free in n/a

What is CVE-2022-44640?

CVE-2022-44640 is a critical use after free vulnerability in Samba Samba, published on 25 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the ASN.1 codec used by the Key Distribution Center (KDC).

Weakness: CWE-415

Which versions are affected by CVE-2022-44640?

It affects 2 products.

Products include Heimdal Project Heimdal, Samba Samba.

How do I fix CVE-2022-44640?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2022-44640 being exploited?

There is no known exploitation of CVE-2022-44640 in the wild and no public exploit code.

Other vulnerabilities in Samba Samba

• CVE-2022-42898 Integer overflow in n/a High 8.8
• CVE-2022-3116 Null dereference in Heimdal Software Kerberos High 7.5
• CVE-2022-45142 Security feature bypass in Samba High 7.5
• CVE-2021-44758 Null dereference in n/a High 7.5
• CVE-2018-16860 Auth bypass in samba High 7.5

All Samba Samba vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2022-44640, AZL-44388, CLEANSTART-2024-JK21909, DEBIAN-CVE-2022-44640, ECHO-bb12-88ef-d3a9, GHSA-88pm-hfmq-7vv4 and 2 more.