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CVE-2016-7069

Description

An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing responses from a backend. When dnsdist is configured to add EDNS Client Subnet to a query, the response may contain an EDNS0 OPT record that has to be removed before forwarding the response to the initial client. On a 32-bit system, the pointer arithmetic used when parsing the received response to remove that record might trigger an undefined behavior leading to a crash.

Risk Information

Base Score
7.5
MODERATE
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.016

Associated Vulnerability

VulnerabilityOS Platform
SUSE-SU-2023:2760-1(Basesystem Module 15-SP4 ) dnsdist-1.8.0-150400.9.3.1.x86_64.rpmLinux
SUSE-SU-2023:2760-1(Basesystem Module 15-SP4 ) dnsdist-debuginfo-1.8.0-150400.9.3.1.x86_64.rpmLinux
SUSE-SU-2023:2760-1(Basesystem Module 15-SP4 ) dnsdist-debugsource-1.8.0-150400.9.3.1.x86_64.rpmLinux
SUSE-SU-2023:2760-1(Basesystem Module 15-SP4 ) libluajit-5_1-2-2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1.x86_64.rpmLinux
SUSE-SU-2023:2760-2(Basesystem Module 15-SP5) dnsdist-1.8.0-150400.9.3.1.x86_64.rpmLinux
SUSE-SU-2023:2760-2(Basesystem Module 15-SP5) libluajit-5_1-2-2.1.0~beta3+git.1624618403.e9577376-150400.4.2.1.x86_64.rpmLinux
SUSE-SU-2023:2760-2(Basesystem Module 15-SP5) dnsdist-debuginfo-1.8.0-150400.9.3.1.x86_64.rpmLinux
SUSE-SU-2023:2760-2(Basesystem Module 15-SP5) dnsdist-debugsource-1.8.0-150400.9.3.1.x86_64.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234