CVE-2022-22707: debian debian_linux Out-of-bounds Write
Vulnerability summary
CVE-2022-22707 is a medium (CVSS 5.9) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 8.93% chance of exploitation in the next 30 days, higher than 95.2% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 06-01-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
8.93%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
0.00 pp
From 8.93% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (redmine.lighttpd.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- lighttpd< 1.4.53-4+deb10u2 | < 1.4.59-1+deb11u1 | < 1.4.64-1
- debian_linuxEOL10.0 | 11.0
Opensuse2 products
- lighttpd&distro=openSUSE Leap 15.3< 1.4.64-bp153.2.3.1
- lighttpd&distro=openSUSE Tumbleweed< 1.4.64-1.1
Alpine1 product
- lighttpd≥ 1.4.46, < 1.4.64-r0
Lighttpd1 product
- lighttpd≥ 1.4.46, ≤ 1.4.63
Mageia1 product
- lighttpd< 1.4.59-1.1.mga8
Suse1 product
- lighttpd&distro=SUSE Package Hub 15 SP3< 1.4.64-bp153.2.3.1
Ubuntu1 product
- lighttpd< 1.4.55-1ubuntu1.20.04.2 | < 1.4.63-1ubuntu3.1
7 vendors · 9 products
