CVE-2023-26049
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.
Does this matter?
Lower severity and a low EPSS score (1.30%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.30% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- eclipse/jetty · debian/debian linux · netapp/active iq unified manager · netapp/e-series santricity os controller · netapp/e-series santricity unified manager · netapp/e-series santricity web services
- Source
- security-advisories@github.com
References
- https://github.com/eclipse/jetty.project/pull/9339Patch
- https://github.com/eclipse/jetty.project/pull/9352Patch
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-p26g-97m4-6q7cPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00039.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230526-0001/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5507Third Party Advisory
- https://www.rfc-editor.org/rfc/rfc2965Technical Description
- https://www.rfc-editor.org/rfc/rfc6265Technical Description
- https://github.com/eclipse/jetty.project/pull/9339Patch
- https://github.com/eclipse/jetty.project/pull/9352Patch
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-p26g-97m4-6q7cPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00039.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230526-0001/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5507Third Party Advisory
- https://www.rfc-editor.org/rfc/rfc2965Technical Description
- https://www.rfc-editor.org/rfc/rfc6265Technical Description
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.