CVE-2020-28025 Information disclosure in n/a

What is CVE-2020-28025?

CVE-2020-28025 is a high-severity vulnerability in Exim Exim, published on 6 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory.

Weakness: CWE-125

Which versions are affected by CVE-2020-28025?

It affects 1 product.

Products include Exim Exim.

How do I fix CVE-2020-28025?

Upgrade to a fixed version.

Is CVE-2020-28025 being exploited?

There is no known exploitation of CVE-2020-28025 in the wild and no public exploit code.

Other vulnerabilities in Exim Exim

• CVE-2026-45185 Use after free in Exim Critical 9.8
• CVE-2023-42115 Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability Critical 9.8
• CVE-2020-28017 Integer overflow in n/a Critical 9.8
• CVE-2020-28018 Use after free in n/a Critical 9.8
• CVE-2020-28020 Integer overflow in n/a Critical 9.8

All Exim Exim vulnerabilities

Sources

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

Also known as CLEANSTART-2025-UM11689, DEBIAN-CVE-2020-28025, GHSA-g68g-g7cj-r38f, UBUNTU-CVE-2020-28025.