CVE-2022-41556 Details
A resource leak in gw_backend.c in lighttpd 1.4.56 through 1.4.66 could lead to a denial of service (connection-slot exhaustion) after a large amount of anomalous TCP behavior by clients. It is related to RDHUP mishandling in certain HTTP/1.1 chunked situations. Use of mod_fastcgi is, for example, affected. This is fixed in 1.4.67.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2022-41556
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.5 Probability of exploitation activity being observed over the next 30 days (65th percentile)
CVSS score for CVE-2022-41556
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.5 High
Products affected by CVE-2022-41556
Lighttpd 1.4.56
Lighttpd 1.4.57
Lighttpd 1.4.58
Lighttpd 1.4.59
Lighttpd 1.4.60
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2022-41556 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
HK 15,087 26.35%
KR 12,882 22.50%
US 7,157 12.50%
JP 4,266 7.45%
DE 3,331 5.82%
NL 2,361 4.12%
GB 1,201 2.10%
TW 1,150 2.01%
FR 927 1.62%
SE 620 1.08%

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CVE-2022-41556 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 25,395 70.54%
Technology 9,626 26.74%
Education 254 0.71%
Business Services 224 0.62%
Utilities 117 0.33%
Aerospace/Defense 73 0.20%
Government/Politics 64 0.18%
Retail 42 0.12%
Energy/Resources 36 0.10%
Media/Entertainment 28 0.08%

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