Buffer overflow in GNU Glibc
CVE-2020-10029
The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- sourceware.org/git/gitweb.cgi
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200327-0003/ (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202006-04 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4416-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/10/msg00021.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10029?
- CVE-2020-10029 is a medium-severity vulnerability in GNU Glibc, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2020-03-04.
- How severe is CVE-2020-10029?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-10029 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.