Vulnerability · Published May 18, 2020 · Assigned by mitre
CVE-2020-10958
Medium 5.3
In plain English
A medium-severity security flaw in the dovecot package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 6.1% (higher than 93% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)5.3Medium
Exploit odds (30 days)6.1%top 6.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | dovecot | 1:2.3.8-4.el8 | ALSA-2020:4763 |
| AlmaLinux:8 | dovecot-devel | 1:2.3.8-4.el8 | ALSA-2020:4763 |
| Alpine:v3.20 | dovecot | 2.3.10.1-r0 | ALPINE-CVE-2020-10958 |
| Alpine:v3.21 | dovecot | 2.3.10.1-r0 | ALPINE-CVE-2020-10958 |
| Alpine:v3.22 | dovecot | 2.3.10.1-r0 | ALPINE-CVE-2020-10958 |
| Alpine:v3.23 | dovecot | 2.3.10.1-r0 | ALPINE-CVE-2020-10958 |
| Alpine:v3.24 | dovecot | 2.3.10.1-r0 | ALPINE-CVE-2020-10958 |
| Debian:12 | dovecot | 1:2.3.10.1+dfsg1-1 | DEBIAN-CVE-2020-10958 |
| Debian:13 | dovecot | 1:2.3.10.1+dfsg1-1 | DEBIAN-CVE-2020-10958 |
| Debian:14 | dovecot | 1:2.3.10.1+dfsg1-1 | DEBIAN-CVE-2020-10958 |
Affected products (as reported)
References
- https://dovecot.org/security x_refsource_MISC
- https://www.openwall.com/lists/oss-security/2020/05/18/1 x_refsource_CONFIRM
- [oss-security] 20200518 Multiple vulnerabilities in Dovecot IMAP server mailing-list, x_refsource_MLIST
- USN-4361-1 vendor-advisory, x_refsource_UBUNTU
- 20200519 Multiple vulnerabilities in Dovecot IMAP server mailing-list, x_refsource_FULLDISC
- http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html x_refsource_MISC
- DSA-4690 vendor-advisory, x_refsource_DEBIAN
- FEDORA-2020-1dee17d880 vendor-advisory, x_refsource_FEDORA
- openSUSE-SU-2020:0720 vendor-advisory, x_refsource_SUSE
- FEDORA-2020-b60344c987 vendor-advisory, x_refsource_FEDORA