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veracodeVeracode Vulnerability DatabaseVERACODE:12600
HistoryJan 15, 2019 - 9:19 a.m.

Regular Expression Denial Of Service (ReDoS) Via Parsing Cookies

2019-01-1509:19:22
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
11

EPSS

0.013

Percentile

85.8%

tough-cookie is vulnerable to regular expression denial of service (ReDoS) attack. The vulnerability exists because the COOKIE_PAIR regular expression used to parse the cookies causes unlimited repetitions when matching input characters. By using a large cookie string, attackers can make the process hang and cause a denial of service condition.