cve/2018/CVE-2018-20796.md

### [CVE-2018-20796](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20796)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/DanMolz/wiz-scripts
- https://github.com/GrigGM/05-virt-04-docker-hw
- https://github.com/PajakAlexandre/wik-dps-tp02
- https://github.com/cdupuis/image-api
- https://github.com/flyrev/security-scan-ci-presentation
- https://github.com/fokypoky/places-list
- https://github.com/garethr/snykout
- https://github.com/mauraneh/WIK-DPS-TP02