A pdns-recursor security update has been released for SUSE Linux Enterprise 15 SP4.

openSUSE-SU-2023:0101-1: important: Security update for pdns-recursor

openSUSE Security Update: Security update for pdns-recursor
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Announcement ID: openSUSE-SU-2023:0101-1
Rating: important
References: #1209897
Cross-References: CVE-2023-26437
CVSS scores:
CVE-2023-26437 (NVD) : 3.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L

Affected Products:
openSUSE Backports SLE-15-SP4
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An update that fixes one vulnerability is now available.

Description:

This update for pdns-recursor fixes the following issues:

pdns-recursor was updated to 4.6.6:

* fixes deterred spoofing attempts can lead to authoritative servers being
marked unavailable (boo#1209897, CVE-2023-26437)

Fixes in 4.6.5:

* When an expired NSEC3 entry is seen, move it to the front
of the expiry queue
* Log invalid RPZ content when obtained via IXFR
* Detect invalid bytes in makeBytesFromHex()
* Timeout handling for IXFRs as a client

Fixes in 4.6.4:

* Check qperq limit if throttling happened, as it increases counters
* Failure to retrieve DNSKEYs of an Insecure zone should not be fatal
* Resize answer length to actual received length in udpQueryResponse

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Backports SLE-15-SP4:

zypper in -t patch openSUSE-2023-101=1


Package List:

- openSUSE Backports SLE-15-SP4 (aarch64 ppc64le x86_64):

pdns-recursor-4.6.6-bp154.2.6.1
pdns-recursor-debuginfo-4.6.6-bp154.2.6.1
pdns-recursor-debugsource-4.6.6-bp154.2.6.1

References:

  https://www.suse.com/security/cve/CVE-2023-26437.html
  https://bugzilla.suse.com/1209897