Vulnerability · Published Sep 18, 2020 · Assigned by mitre
CVE-2020-25756
Critical 9.8
In plain English
A critical-severity security flaw in the swupdate package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.6%top 23.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A buffer overflow vulnerability exists in the mg_get_http_header function in Cesanta Mongoose 6.18 due to a lack of bounds checking. A crafted HTTP header can exploit this bug. NOTE: a committer has stated "this will not happen in practice.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | swupdate | 2022.12+dfsg-1 | DEBIAN-CVE-2020-25756 |
| Debian:13 | swupdate | 2022.12+dfsg-1 | DEBIAN-CVE-2020-25756 |
| Debian:14 | swupdate | 2022.12+dfsg-1 | DEBIAN-CVE-2020-25756 |
Affected products (as reported)
References
- https://github.com/cesanta/mongoose/issues/1135 x_refsource_MISC