CVE-2018-20796
Published: 26 February 2019
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep.
Priority
Negligible
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
Upstream |
Deferred
|
| Ubuntu 20.10 (Groovy Gorilla) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Ignored
|
|
|
glibc Launchpad, Ubuntu, Debian |
Upstream |
Deferred
|
| Ubuntu 20.10 (Groovy Gorilla) |
Ignored
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Ignored
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Ignored
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Ignored
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
Notes
| Author | Note |
|---|---|
| mdeslaur | glibc regex compiler is not supposed to be exposed to untrusted content, and upstream does not consider this to be a security issue: https://sourceware.org/glibc/wiki/Security%20Exceptions https://lists.gnu.org/r/bug-gnulib/2018-09/msg00068.html as of 2020-06-04, no fix available from upstream. We will not be fixing this issue in Ubuntu, marking as ignored. |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20796
- https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html
- NVD
- Launchpad
- Debian