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cvelistGitHub_MCVELIST:CVE-2023-26049
HistoryApr 18, 2023 - 8:35 p.m.

CVE-2023-26049 Cookie parsing of quoted values can exfiltrate values from other cookies in Eclipse Jetty

2023-04-1820:35:36
CWE-200
GitHub_M
www.cve.org
2
cve-2023-26049
cookie parsing
eclipse jetty
security implications
httponly cookie
upgrade.

CVSS3

2.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

40.9%

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 โ€“ 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.

CNA Affected

[
  {
    "vendor": "eclipse",
    "product": "jetty.project",
    "versions": [
      {
        "version": "< 9.4.51",
        "status": "affected"
      },
      {
        "version": ">= 10.0.0, < 10.0.14",
        "status": "affected"
      },
      {
        "version": ">= 11.0.0, < 11.0.14",
        "status": "affected"
      },
      {
        "version": ">= 12.0.0.alpha0, < 12.0.0.beta0",
        "status": "affected"
      }
    ]
  }
]

CVSS3

2.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

40.9%