CVE-2019-25034 — Integer Overflow or Wraparound in Unbound

CWE-190 — Integer Overflow or WraparoundCWE-787 — Out-of-bounds Write7 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.7%
top 27.11%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Nlnetlabs UnboundDebian Linux
Timeline
PublishedApr 27
Latest updateMay 24

Description

Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading to an out-of-bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶NVDnlnetlabs/unbound< 1.9.5
▶Debiannlnetlabs/unbound< 1.9.6-1+3

Also affects: Debian Linux 9.0

Patches

Patch: ostif.org ↗Patch: ostif.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-qx43-gpvm-wqvr: Unbound before 1↗2022-05-24
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OSV
CVE-2019-25034: Unbound before 1↗2021-04-27
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CVEList
CVE-2019-25034: Unbound before 1↗2021-04-27
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📋Vendor Advisories

3
Ubuntu
Unbound vulnerabilities↗2021-05-06
▶
Red Hat
unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write↗2019-12-11
▶
Debian
CVE-2019-25034: unbound - Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_orig...↗2019
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CVE-2019-25034 — Integer Overflow or Wraparound | cvebase