Vulnerability Monitor

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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

2017-08-01T16:29:00.180

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-770

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	glibc	≤ 2.25	Yes

References

http://www.securityfocus.com/bid/100598 ([email protected])
https://access.redhat.com/errata/RHSA-2018:0805 ([email protected])
https://arxiv.org/pdf/1205.4011.pdf Technical Description, Third Party Advisory ([email protected])
https://sourceware.org/bugzilla/show_bug.cgi?id=21361 Issue Tracking, Patch, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/100598 (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2018:0805 (af854a3a-2127-422b-91ae-364da2661108)
https://arxiv.org/pdf/1205.4011.pdf Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://sourceware.org/bugzilla/show_bug.cgi?id=21361 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)