CVE-2017-12132 — Allocation of Resources Without Limits or Throttling in Glibc

CWE-770 — Allocation of Resources Without Limits or Throttling10 documents8 sources
Severity
5.9MEDIUMNVD
EPSS
0.3%
top 47.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
GNU Glibc
Timeline
PublishedAug 1
Latest updateDec 8

Description

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.

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 2.2 | Impact: 3.6

Affected Packages2 packages

▶Debiangnu/glibc< 2.25-1+3
▶NVDgnu/glibc2.25

Patches

Patch: sourceware.org ↗Patch: sourceware.org ↗

🔴Vulnerability Details

4
OSV
glibc vulnerabilities↗2022-12-08
▶
GHSA
GHSA-wjh5-4fq2-439w: The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2↗2022-05-13
▶
CVEList
CVE-2017-12132: The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2↗2017-08-01
▶
OSV
CVE-2017-12132: The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2↗2017-08-01
▶

📋Vendor Advisories

3
Ubuntu
GNU C Library vulnerabilities↗2022-12-08
▶
Red Hat
glibc: Fragmentation attacks possible when EDNS0 is enabled↗2017-04-07
▶
Debian
CVE-2017-12132: glibc - The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2...↗2017
▶

💬Community

2
Bugzilla
CVE-2017-12132 glibc: Fragmentation attacks possible when ENDS0 is enabled [fedora-all]↗2017-08-02
▶
Bugzilla
CVE-2017-12132 glibc: Fragmentation attacks possible when EDNS0 is enabled↗2017-08-02
▶
CVE-2017-12132 — GNU Glibc vulnerability | cvebase