Bug 2137774 (CVE-2022-3437)

Summary:	CVE-2022-3437 samba: heap buffer overflow in GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abokovoy, anoopcs, asn, dkarpele, gdeschner, kyoshida, pfilipen, rhs-smb, sbose
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	samba 4.15.11, samba 4.16.6, samba 4.17.2	Doc Type:	If docs needed, set a value
Doc Text:	A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-02-09 01:36:49 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:	2137777, 2138446
Bug Blocks:	2137644

Description TEJ RATHI 2022-10-26 07:29:15 UTC

The DES (for Samba 4.11 and earlier) and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet.

Affects - All versions of Samba since Samba 4.0 compiled with Heimdal Kerberos.
Samba 4.15.11, 4.16.6 and 4.17.2 have been issued as security releases to correct the defect

https://www.samba.org/samba/security/CVE-2022-3437.html

Comment 1 TEJ RATHI 2022-10-26 07:36:52 UTC

Created samba tracking bugs for this issue:

Affects: fedora-all [bug 2137777]

Comment 7 Product Security DevOps Team 2023-02-09 01:36:47 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-2022-3437