Resource exhaustion in GNU Glibc
CVE-2017-12132
The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.020 (79.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.020 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- arxiv.org/pdf/1205.4011.pdf (Technical Description, Third Party Advisory)
- www.securityfocus.com/bid/100598 (vdb-entry)
- sourceware.org/bugzilla/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2018:0805 (vendor-advisory)
Frequently asked questions
- What is CVE-2017-12132?
- CVE-2017-12132 is a medium-severity vulnerability in GNU Glibc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.9/10. Published 2017-08-01.
- How severe is CVE-2017-12132?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2017-12132 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.