Vulnerability in GNU Glibc
CVE-2019-6488
The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/106671 (Third Party Advisory, vdb-entry)
- sourceware.org/bugzilla/show_bug.cgi (Third Party Advisory, Issue Tracking)
- security.gentoo.org/glsa/202006-04 (vendor-advisory)
Frequently asked questions
- What is CVE-2019-6488?
- CVE-2019-6488 is a high-severity vulnerability in GNU Glibc, classified under Improper Resource Shutdown or Release. CVSS score: 7.8/10. Published 2019-01-18.
- How severe is CVE-2019-6488?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-6488 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.