Buffer overflow in GNU Glibc
CVE-2015-5277
The get_contents function in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) before 2.20 might allow local users to cause a denial of service (heap corruption) or gain privileges via a long line in the NSS files database.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.2 (High). Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.006 (46.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- GNU Glibc
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Hpc Node — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-2985-2 (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2015-2172.html (vendor-advisory)
- security.gentoo.org/glsa/201702-11 (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- www.securitytracker.com/id/1034196 (vdb-entry)
- sourceware.org/ml/libc-alpha/2014-09/msg00088.html (mailing-list)
- www.securityfocus.com/bid/78092 (vdb-entry)
- sourceware.org/bugzilla/show_bug.cgi
- www.ubuntu.com/usn/USN-2985-1 (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi
Frequently asked questions
- What is CVE-2015-5277?
- CVE-2015-5277 is a vulnerability in GNU Glibc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-12-17.
- Is CVE-2015-5277 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.