CVE catalog
CVE-2020-5243
uap-core: CVE-2020-5243
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.29% · Oct 25, 2026
uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | uap-core | sid | 1:0.18.0-1 | fixed |
| Debian | uap-core | forky | 1:0.18.0-1 | fixed |
| Debian | uap-core | trixie | 1:0.18.0-1 | fixed |
| Debian | uap-core | bookworm | 1:0.16.0-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | uap-core | source | sid | 1:0.8.0-1 | not yet assigned | Not reported | [952649] |
| Debian | uap-core | source | forky | 1:0.8.0-1 | not yet assigned | Not reported | [952649] |
| Debian | uap-core | source | trixie | 1:0.8.0-1 | not yet assigned | Not reported | [952649] |
| Debian | uap-core | source | bookworm | 1:0.8.0-1 | not yet assigned | Not reported | [952649] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [uap-core]Fixed
Details (2)
1:0.16.0-1· all · bookwormFixed · Fixed:
1:0.8.0-1dsa · uap-core · debian · bookworm; dsa · uap-core · debian · 12
1:0.16.0-1· all · bookwormFixed · Fixed:
1:0.8.0-1dsa · uap-core · debian · bookworm; dsa · uap-core · debian · 12
[Debian 13 (Trixie)]
- [uap-core]Fixed
Details (2)
1:0.18.0-1· all · trixieFixed · Fixed:
1:0.8.0-1dsa · uap-core · debian · 13
1:0.18.0-1· all · trixieFixed · Fixed:
1:0.8.0-1dsa · uap-core · debian · 13
Observed: