CVE-2019-25034

python3-unbound: The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver

CVE-2019-25034 is fixed in 9 products on 1 platform, first by libunbound2 1.6.7-1ubuntu2.4, released April 26, 2021. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
9.8
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0288
86th percentile

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fix(es): * unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032) * unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write (CVE-2019-25034) * unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035) * unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036) * unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet (CVE-2019-25037) * unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038) * unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039) * unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040) * unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041) * unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042) * unbound: symbolic link traversal when writing PID file (CVE-2020-28935) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
libunbound2 · Ubuntu 18.04.6 LTS (bionic) 1.6.7-1ubuntu2.4 libunbound2 1.6.7-1ubuntu2.4 Apr 26, 2021
libunbound8 · Ubuntu 20.04 LTS (focal) 1.9.4-2ubuntu1.2 libunbound8 1.9.4-2ubuntu1.2 Apr 26, 2021
python-unbound · Ubuntu 18.04.6 LTS (bionic) 1.6.7-1ubuntu2.4 python-unbound 1.6.7-1ubuntu2.4 Apr 26, 2021
python-unbound · Ubuntu 20.04 LTS (focal) 1.9.4-2ubuntu1.2 python-unbound 1.9.4-2ubuntu1.2 Apr 26, 2021
python3-unbound · RHEL 8 0:1.7.3-15.el8 RHSA-2021:1853 May 18, 2021
python3-unbound · Ubuntu 18.04.6 LTS (bionic) 1.6.7-1ubuntu2.4 python3-unbound 1.6.7-1ubuntu2.4 Apr 26, 2021
python3-unbound · Ubuntu 20.04 LTS (focal) 1.9.4-2ubuntu1.2 python3-unbound 1.9.4-2ubuntu1.2 Apr 26, 2021
python3-unbound · ol 8 0:1.7.3-15.el8 ELSA-2021-1853 May 25, 2021
unbound · RHEL 8 0:1.7.3-15.el8 RHSA-2021:1853 May 18, 2021
unbound · Ubuntu 18.04.6 LTS (bionic) 1.6.7-1ubuntu2.4 unbound 1.6.7-1ubuntu2.4 Apr 26, 2021
unbound · Ubuntu 20.04 LTS (focal) 1.9.4-2ubuntu1.2 unbound 1.9.4-2ubuntu1.2 Apr 26, 2021
unbound · ol 8 0:1.7.3-15.el8 ELSA-2021-1853 May 25, 2021
unbound-anchor · Ubuntu 18.04.6 LTS (bionic) 1.6.7-1ubuntu2.4 unbound-anchor 1.6.7-1ubuntu2.4 Apr 26, 2021
unbound-anchor · Ubuntu 20.04 LTS (focal) 1.9.4-2ubuntu1.2 unbound-anchor 1.9.4-2ubuntu1.2 Apr 26, 2021
unbound-devel · RHEL 8 0:1.7.3-15.el8 RHSA-2021:1853 May 18, 2021
unbound-devel · ol 8 0:1.7.3-15.el8 ELSA-2021-1853 May 25, 2021
unbound-host · Ubuntu 18.04.6 LTS (bionic) 1.6.7-1ubuntu2.4 unbound-host 1.6.7-1ubuntu2.4 Apr 26, 2021
unbound-host · Ubuntu 20.04 LTS (focal) 1.9.4-2ubuntu1.2 unbound-host 1.9.4-2ubuntu1.2 Apr 26, 2021
unbound-libs · RHEL 8 0:1.7.3-15.el8 RHSA-2021:1853 May 18, 2021
unbound-libs · ol 8 0:1.7.3-15.el8 ELSA-2021-1853 May 25, 2021

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