Vulnerability · Published May 6, 2021 · Assigned by mitre
CVE-2020-28010
High 7.8
In plain English
A high-severity security flaw in the exim package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 63.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Exim 4 before 4.94.2 allows Out-of-bounds Write because the main function, while setuid root, copies the current working directory pathname into a buffer that is too small (on some common platforms).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28010 |
| Alpine:v3.21 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28010 |
| Alpine:v3.22 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28010 |
| Alpine:v3.23 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28010 |
| Alpine:v3.24 | exim | 4.94.2-r0 | ALPINE-CVE-2020-28010 |
| Debian:12 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28010 |
| Debian:13 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28010 |
| Debian:14 | exim4 | 4.94.2-1 | DEBIAN-CVE-2020-28010 |
Affected products (as reported)
References
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28010-SLCWD.txt x_refsource_MISC
- [oss-security] 20210722 Re: CVE-2021-33909: size_t-to-int vulnerability in Linux's filesystem layer mailing-list, x_refsource_MLIST