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 |