Bug 1905217 (CVE-2020-29562) - CVE-2020-29562 glibc: assertion failure in iconv when converting invalid UCS4
Summary: CVE-2020-29562 glibc: assertion failure in iconv when converting invalid UCS4
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-29562
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: 1905218 1912204 1912205 1912206
Blocks: 1905219
TreeView+ depends on / blocked
 
Reported: 2020-12-07 18:34 UTC by Guilherme de Almeida Suckevicz
Modified: 2024-03-25 17:26 UTC (History)
11 users (show)

Fixed In Version: glibc 2.33
Doc Type: If docs needed, set a value
Doc Text:
A denial of service flaw was found in the way glibc's iconv function handled UCS4 text containing an irreversible character. This flaw causes an application compiled with glibc and using the vulnerable function to terminate with an assertion, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-05-27 17:32:00 UTC
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2020-12-07 18:34:55 UTC 
The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

Reference:
https://sourceware.org/bugzilla/show_bug.cgi?id=26923
Comment 1 Guilherme de Almeida Suckevicz 2020-12-07 18:36:35 UTC 
Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1905218]
Comment 2 Siddhesh Poyarekar 2020-12-08 02:47:23 UTC 
Upstream fix: https://sourceware.org/git/?p=glibc.git;h=228edd356f03bf62dcf2b1335f25d43c602ee68d
Comment 3 lnacshon 2020-12-10 10:32:33 UTC 
No services using 2.30-2.32
Comment 10 Product Security DevOps Team 2021-05-27 17:32:00 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-2020-29562
Note You need to log in before you can comment on or make changes to this bug.