Bug 1974192 (CVE-2017-20005)

Summary:	CVE-2017-20005 nginx: buffer overflow in ngx_gmtime() triggered by 5 digit years
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	bcoca, chousekn, cmeyers, davidn, felix, gblomqui, hhorak, jcammara, jeremy, jhardy, jkaluza, jobarker, jorton, luhliari, mabashia, notting, ollie.yeoh, osapryki, pavel.lisy, peter.borsa, relrod, rpetrell, sdoran, smcdonal, tkuratom, wtogami
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nginx 1.13.6	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in nginx. When a date exists earlier than the standard epoch, as demonstrated by a file with a modification date in 1969 that causes a negative number to be treated as an unsigned integer, the year field becomes five characters long, larger than is allocated for, leading to a buffer overflow. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-21 15:04:29 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1974193

Description Marian Rehak 2021-06-21 06:18:23 UTC

NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with a modification date in 1969 that causes an integer overflow (or a false modification date far in the future), when encountered by the autoindex module.

External reference:

https://trac.nginx.org/nginx/ticket/1368

Comment 1 Riccardo Schirone 2021-06-21 13:24:58 UTC

Upstream patches:
http://hg.nginx.org/nginx/rev/cdbcb73239ee
http://hg.nginx.org/nginx/rev/644d0457782a

Comment 2 Riccardo Schirone 2021-06-21 13:30:02 UTC

RHEL 8 versions and RHSCL-3 versions of NGINX markes as notaffected based on reported affected version and manual review of the code. The patch is already applied in those versions.

Comment 3 Product Security DevOps Team 2021-06-21 15:04:29 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2017-20005