Vulnerability · Published Feb 12, 2020 · Assigned by mitre
CVE-2020-7957
Low 3.1
In plain English
A low-severity security flaw in the dovecot package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)3.1Low
Exploit odds (30 days)1.9%top 20.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | dovecot | 2.3.9.3-r0 | ALPINE-CVE-2020-7957 |
| Alpine:v3.21 | dovecot | 2.3.9.3-r0 | ALPINE-CVE-2020-7957 |
| Alpine:v3.22 | dovecot | 2.3.9.3-r0 | ALPINE-CVE-2020-7957 |
| Alpine:v3.23 | dovecot | 2.3.9.3-r0 | ALPINE-CVE-2020-7957 |
| Alpine:v3.24 | dovecot | 2.3.9.3-r0 | ALPINE-CVE-2020-7957 |
Affected products (as reported)
References
- https://dovecot.org/security x_refsource_MISC
- http://www.openwall.com/lists/oss-security/2020/02/12/2 x_refsource_CONFIRM
- https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html x_refsource_CONFIRM
- FEDORA-2020-10a58fda28 vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-0e6a67af5a vendor-advisory, x_refsource_FEDORA