Vulnerability in Lighttpd
CVE-2022-30780
Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connection_read_header_more in connections.c has a typo that disrupts use of multiple read operations on large headers.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.569 (99.1th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.569 · newest: 0.569 · change: 0.000
Affected products
- Lighttpd — versions 1.4.56, 1.4.57, 1.4.58
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/lighttpd/lighttpd1.4 (Product, Third Party Advisory)
- redmine.lighttpd.net/issues/3059 (Patch, Issue Tracking, Vendor Advisory)
- podalirius.net/en/cves/2022-30780/ (Exploit, Third Party Advisory)
- github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-service (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-30780?
- CVE-2022-30780 is a high-severity vulnerability in Lighttpd, classified under Incorrect Calculation. CVSS score: 7.5/10. Published 2022-06-11.
- How severe is CVE-2022-30780?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-30780 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.