Bug 2189106 (CVE-2021-46879) - CVE-2021-46879 fluent-bit: heap overflow in flb_msgpack_gelf_value_ext
Summary: CVE-2021-46879 fluent-bit: heap overflow in flb_msgpack_gelf_value_ext
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-46879
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2189108 2189109
Blocks: 2186018
TreeView+ depends on / blocked
 
Reported: 2023-04-24 08:39 UTC by Anten Skrabec
Modified: 2023-04-24 13:16 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2023-04-24 13:16:09 UTC
Embargoed:

Attachments (Terms of Use)

Description Anten Skrabec 2023-04-24 08:39:15 UTC 
An issue was discovered in Treasure Data Fluent Bit 1.7.1, a wrong variable is used to get the msgpack data resulting in a heap overflow in flb_msgpack_gelf_value_ext. An attacker can craft a malicious file and tick the victim to open the file with the software, triggering a heap overflow and execute arbitrary code on the target system.
Comment 1 Anten Skrabec 2023-04-24 08:39:43 UTC 
Created fluent-bit tracking bugs for this issue:

Affects: epel-8 [bug 2189109]
Affects: fedora-all [bug 2189108]
Comment 2 Product Security DevOps Team 2023-04-24 13:16:08 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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