CVE-2023-26049 Details
Jetty is a java based web server and servlet engine. Nonstandard cookie parsing in Jetty may allow an attacker to smuggle cookies within other cookies, or otherwise perform unintended behavior by tampering with the cookie parsing mechanism. If Jetty sees a cookie VALUE that starts with `"` (double quote), it will continue to read the cookie string until it sees a closing quote -- even if a semicolon is encountered. So, a cookie header such as: `DISPLAY_LANGUAGE="b; JSESSIONID=1337; c=d"` will be parsed as one cookie, with the name DISPLAY_LANGUAGE and a value of b; JSESSIONID=1337; c=d instead of 3 separate cookies. This has security implications because if, say, JSESSIONID is an HttpOnly cookie, and the DISPLAY_LANGUAGE cookie value is rendered on the page, an attacker can smuggle the JSESSIONID cookie into the DISPLAY_LANGUAGE cookie and thereby exfiltrate it. This is significant when an intermediary is enacting some policy based on cookies, so a smuggled cookie can bypass that policy yet still be seen by the Jetty server or its logging system. This issue has been addressed in versions 9.4.51, 10.0.14, 11.0.14, and 12.0.0.beta0 and users are advised to upgrade. There are no known workarounds for this issue.
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Exploit prediction scoring system (EPSS) score for CVE-2023-26049
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%).
0.35 Probability of exploitation activity being observed over the next 30 days (57th percentile)
CVSS score for CVE-2023-26049
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.
2.4 Low
Products affected by CVE-2023-26049
Jetty 1.0
Jetty 10.0.0
Jetty 10.0.1
Jetty 10.0.11
Jetty 10.0.12
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-2023-26049 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 20,753 29.22%
CN 8,505 11.98%
DE 5,582 7.86%
FR 2,734 3.85%
JP 2,379 3.35%
GB 1,997 2.81%
IN 1,971 2.78%
SG 1,962 2.76%
KR 1,854 2.61%
AU 1,808 2.55%

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CVE-2023-26049 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
Technology 46,011 82.54%
Telecommunications 7,164 12.85%
Education 1,008 1.81%
Government/Politics 477 0.86%
Business Services 215 0.39%
Healthcare/Wellness 192 0.34%
Manufacturing 104 0.19%
Retail 96 0.17%
Finance 79 0.14%
Media/Entertainment 74 0.13%

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