What’s Vulnerable › Vulnerabilities

CVE-2018-20796

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-02-26 · updated 2026-06-17
• Weakness: CWE-674

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.

Affected products

• GNU C Library (glibc): through 2.29
• NetApp Cloud Backup: all versions
• NetApp ONTAP Select Deploy administration utility: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions

References

• http://www.securityfocus.com/bid/107160
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141
• https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html
• https://security.netapp.com/advisory/ntap-20190315-0002/
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS
• http://www.securityfocus.com/bid/107160
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141
• https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html
• https://security.netapp.com/advisory/ntap-20190315-0002/
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS

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