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Security Advisories: GSA_kwCzR0hTQS1meDJjLTk2dmotOTg1ds4AAwRn
HAProxyMessageDecoder Stack Exhaustion DoS
Impact
A StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion.
Patches
Users should upgrade to 4.1.86.Final.
Workarounds
There is no workaround, except using a custom HaProxyMessageDecoder.
References
When parsing a TLV with type = PP2_TYPE_SSL, the value can be again a TLV with type = PP2_TYPE_SSL and so on.
The only limitation of the recursion is that the TLV length cannot be bigger than 0xffff because it is encoded in an unsigned short type.
Providing a TLV with a nesting level that is large enough will lead to raising of a StackOverflowError.
The StackOverflowError will be caught if HAProxyMessageDecoder is used as part of Netty’s ChannelPipeline, but using it directly without the ChannelPipeline will lead to a thrown exception / crash.
For more information
If you have any questions or comments about this advisory:
- Open an issue in netty
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1meDJjLTk2dmotOTg1ds4AAwRn
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 1 year ago
Updated: about 1 year ago
CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Identifiers: GHSA-fx2c-96vj-985v, CVE-2022-41881
References:
- https://github.com/netty/netty/security/advisories/GHSA-fx2c-96vj-985v
- https://nvd.nist.gov/vuln/detail/CVE-2022-41881
- https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html
- https://www.debian.org/security/2023/dsa-5316
- https://security.netapp.com/advisory/ntap-20230113-0004/
- https://github.com/advisories/GHSA-fx2c-96vj-985v
Blast Radius: 14.5
Affected Packages
maven:io.netty:netty-codec-haproxy
Dependent packages: 201Dependent repositories: 551
Downloads:
Affected Version Ranges: < 4.1.86.Final
Fixed in: 4.1.86.Final
All affected versions: 4.1.8-0.Final, 4.1.8-1.Final, 4.1.8-2.Final, 4.1.8-3.Final, 4.1.8-4.Final, 4.1.8-5.Final
All unaffected versions: