CVE-2020-27618
Published: 26 February 2021
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228.
Notes
Author | Note |
---|---|
sbeattie | addressing this issue likely also depends on addressing CVE-2016-10228 which is upstream commit 91927b7c76 ("Rewrite iconv option parsing [BZ #19519]") in older versions on glibc, but is a pretty significant change. |
Priority
Status
Package | Release | Status |
---|---|---|
eglibc Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
trusty |
Needed
|
|
xenial |
Does not exist
|
|
bionic |
Does not exist
|
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
glibc Launchpad, Ubuntu, Debian |
groovy |
Ignored
(end of life)
|
bionic |
Released
(2.27-3ubuntu1.5)
|
|
xenial |
Released
(2.23-0ubuntu11.3+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
focal |
Released
(2.31-0ubuntu9.7)
|
|
hirsute |
Not vulnerable
(2.33-0ubuntu1)
|
|
impish |
Not vulnerable
(2.33-0ubuntu1)
|
|
jammy |
Not vulnerable
(2.33-0ubuntu1)
|
|
kinetic |
Not vulnerable
(2.33-0ubuntu1)
|
|
lunar |
Not vulnerable
(2.33-0ubuntu1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.33)
|
|
Patches: upstream: https://sourceware.org/git/?p=glibc.git;a=commit;h=9a99c682144bdbd40792ebf822fe9264e0376fb5 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |