Bug 1981519 (CVE-2021-27293) - CVE-2021-27293 restsharp: ReDoS when converting strings into DateTimes
Summary: CVE-2021-27293 restsharp: ReDoS when converting strings into DateTimes
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-27293
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1981520
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-07-12 17:59 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-07-12 22:40 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-07-12 22:40:31 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-07-12 17:59:22 UTC 
RestSharp < 106.11.8-alpha.0.13 uses a regular expression which is vulnerable to Regular Expression Denial of Service (ReDoS) when converting strings into DateTimes. If a server responds with a malicious string, the client using RestSharp will be stuck processing it for an exceedingly long time. Thus the remote server can trigger Denial of Service.

Reference:
https://github.com/restsharp/RestSharp/issues/1556
Comment 1 Guilherme de Almeida Suckevicz 2021-07-12 17:59:38 UTC 
Created restsharp tracking bugs for this issue:

Affects: fedora-all [bug 1981520]
Comment 2 Product Security DevOps Team 2021-07-12 22:40:31 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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