Deserialization in GNU Glibc
CVE-2017-8804
The xdr_bytes and xdr_string functions in the GNU C Library (aka glibc or libc6) 2.25 mishandle failures of buffer deserialization, which allows remote attackers to cause a denial of service (virtual memory allocation, or memory consumption if an overcommit setting is not used) via a crafted UDP packet to port 111, a related issue to CVE-2017-8779. NOTE: [Information provided from upstream and references
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.077 (94.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.077 · newest: 0.077 · change: 0.000
Affected products
- GNU Glibc — versions 2.25
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.suse.com/show_bug.cgi (Patch, Issue Tracking)
- sourceware.org/ml/libc-alpha/2017-05/msg00105.html (Patch, Issue Tracking)
- www.securityfocus.com/bid/98339 (vdb-entry, Broken Link)
- sourceware.org/bugzilla/show_bug.cgi (Patch, Issue Tracking)
- www.openwall.com/lists/oss-security/2017/05/05/2 (Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2018-02/msg00049.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2018-02/msg00039.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2018-02/msg00026.html (vendor-advisory)
- sourceware.org/legacy-ml/libc-alpha/2017-05/msg00128.html
- sourceware.org/legacy-ml/libc-alpha/2017-05/msg00129.html
Frequently asked questions
- What is CVE-2017-8804?
- CVE-2017-8804 is a high-severity vulnerability in GNU Glibc, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2017-05-07.
- How severe is CVE-2017-8804?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-8804 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.