Vulnerability · Published Aug 6, 2022 · Assigned by mitre
CVE-2022-37451
High 7.5
In plain English
A high-severity security flaw in the exim4 package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 89% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)3.3%top 11.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | exim4 | 4.95-4 | DEBIAN-CVE-2022-37451 |
| Debian:13 | exim4 | 4.95-4 | DEBIAN-CVE-2022-37451 |
| Debian:14 | exim4 | 4.95-4 | DEBIAN-CVE-2022-37451 |
| Ubuntu:22.04:LTS | exim4 | 4.95-4ubuntu2.1 | UBUNTU-CVE-2022-37451 |
Affected products (as reported)
References
- https://github.com/Exim/exim/wiki/EximSecurity x_refsource_MISC
- https://www.exim.org/static/doc/security/ x_refsource_MISC
- https://github.com/ivd38/exim_invalid_free x_refsource_MISC
- https://www.openwall.com/lists/oss-security/2022/08/06/1 x_refsource_MISC
- https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html x_refsource_MISC
- https://cwe.mitre.org/data/definitions/762.html x_refsource_MISC
- https://github.com/Exim/exim/compare/exim-4.95...exim-4.96 x_refsource_MISC
- https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42 x_refsource_MISC
- FEDORA-2022-1ca1d22165 vendor-advisory, x_refsource_FEDORA
- FEDORA-2022-f9a8388e62 vendor-advisory, x_refsource_FEDORA