Integer overflow in Nlnetlabs Unbound
CVE-2019-25033
Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotel…
Vulnerability class: Integer Overflow
EPSS: 0.018 (75.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Nlnetlabs Unbound
- Debian Debian_linux — versions 9.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Not Applicable)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-25033?
- CVE-2019-25033 is a critical-severity vulnerability in Nlnetlabs Unbound, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2021-04-27.
- How severe is CVE-2019-25033?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-25033 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.