PT-2020-10770 · Cherokee · Cherokee

Mateusz Kocielski + 1 · Published 2020-05-17 · Updated 2022-11-21 · CVE-2019-20800

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Cherokee versions 1.2.104 and earlier

Description The issue allows remote attackers to trigger an out-of-bounds write in cherokee handler cgi add env pair in handler cgi.c by sending many request headers, as demonstrated by a GET request with many "Host: 127.0.0.1" headers.

Recommendations For Cherokee versions 1.2.104 and earlier, as a temporary workaround, consider restricting the number of request headers allowed to prevent exploitation until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2019-20800

Affected Products

Cherokee

References · 8

• 🔥 https://github.com/cherokee/webserver/issues/1224 · Exploit
• 🔥 https://logicaltrust.net/blog/2019/11/cherokee.html · Exploit
• https://security.gentoo.org/glsa/202012-09 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20800 · Security Note
• https://osv.dev/vulnerability/CVE-2019-20800 · Vendor Advisory
• https://t.me/cibsecurity/12126 · Telegram Post
• https://t.me/cvenotify/3868 · Telegram Post
• https://t.me/cvenotify/7668 · Telegram Post