Buffer overflow in GNU Glibc
CVE-2020-1751
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- GNU Glibc
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
- Red Hat Glibc — versions 2.31
- Red Hat Enterprise Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- sourceware.org/bugzilla/show_bug.cgi (Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20200430-0002/ (Third Party Advisory)
- security.gentoo.org/glsa/202006-04 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4416-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1751?
- CVE-2020-1751 is a medium-severity vulnerability in GNU Glibc, classified under Out-of-bounds Write. CVSS score: 5.1/10. Published 2020-04-17.
- How severe is CVE-2020-1751?
- Medium severity. CVSS v3 base score is 5.1 out of 10.
- Is CVE-2020-1751 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.