Bug 1954775 (CVE-2019-25033) - CVE-2019-25033 unbound: integer overflow in the regional allocator via the ALIGN_UP macro
Summary: CVE-2019-25033 unbound: integer overflow in the regional allocator via the AL...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2019-25033
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1957801
Blocks: 1954811
TreeView+ depends on / blocked
 
Reported: 2021-04-28 18:39 UTC by Guilherme de Almeida Suckevicz
Modified: 2024-02-08 18:03 UTC (History)
5 users (show)

Fixed In Version: unbound 1.9.6
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in unbound. An integer overflow in the regional allocator via the ALIGN_UP macro may lead to a buffer overflow if the size can be controlled by an attacker. The highest threat from this vulnerability is to data confidentiality and integrity as well as service availability.
Clone Of:
Environment:
Last Closed: 2021-10-28 12:26:13 UTC
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:0749 0 None None None 2024-02-08 18:03:40 UTC

Description Guilherme de Almeida Suckevicz 2021-04-28 18:39:59 UTC
Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro.

Reference:
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/

Comment 4 Riccardo Schirone 2021-05-06 14:50:04 UTC
Statement:

There is no available reproducer or proof of concept for this issue, nor it was ever proven the buffer overflow can happen in practice. Indeed this issue was initially considered just as "side-finding", according to the original report, and for this reason its Impact is Moderate.

Comment 7 errata-xmlrpc 2024-02-08 18:03:38 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0749 https://access.redhat.com/errata/RHSA-2024:0749


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