CVE-2019-25033 Integer overflow in n/a
An integer overflow in the Unbound DNS resolver's regional allocator could potentially lead to a denial of service, though exploitation is disputed.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-25033?
CVE-2019-25033 is a critical vulnerability in Debian Debian Linux, published on 27 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 remotely or locally exploited
Weakness: CWE-190
Which versions are affected by CVE-2019-25033?
It affects 2 products.
Linux distribution packages (8)
python3-unbound Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
python3-unbound-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
unbound Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
unbound-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
unbound-debugsource Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
unbound-devel Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
unbound-libs Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
unbound-libs-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:1.7.3-17.el8_6.1 |
Products include Debian Debian Linux, Nlnetlabs Unbound.
How do I fix CVE-2019-25033?
Upgrade to a fixed version.
Is CVE-2019-25033 being exploited?
There is no known exploitation of CVE-2019-25033 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2019-25033, GHSA-xh42-fcvq-34r9, RHSA-2024:0749, UBUNTU-CVE-2019-25033.