Bug 1598024 (CVE-2018-10888)

Summary: CVE-2018-10888 libgit2: an improper input validation leads to an out-of-bound read in git_delta_apply, allowing to read beyond delta limits
Product: [Other] Security Response Reporter: Riccardo Schirone <rschiron>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: i, icq, igor.raits, security-response-team, veeti.paananen, walter.pete
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: libgit2 0.27.3, libgit2 0.26.5 Doc Type: ---
Doc Text:
A missing check in git_delta_apply function in delta.c file may lead to an out-of-bound read while reading a binary delta file. An attacker may use this flaw to cause a Denial of Service.
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-07-11 12:44:52 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: 1599320    
Bug Blocks:    

Description Riccardo Schirone 2018-07-04 07:43:06 UTC
A missing check in git_delta_apply function in delta.c file, may lead to an out-of-bound read while reading a binary delta file. An attacker may use this flaw to cause a Denial of Service.

Comment 1 Riccardo Schirone 2018-07-04 07:43:09 UTC
Acknowledgments:

Name: Riccardo Schirone (Product Security Red Hat)

Comment 4 Riccardo Schirone 2018-07-09 13:35:41 UTC
External References:

https://github.com/libgit2/libgit2/releases/tag/v0.27.3

Comment 5 Riccardo Schirone 2018-07-09 13:36:46 UTC
Created libgit2 tracking bugs for this issue:

Affects: fedora-all [bug 1599320]