On Fri, Aug 05, 2022 at 09:26:31PM +0200, Salvatore Bonaccorso wrote:
> Source: zlib
> Version: 1:1.2.11.dfsg-4
> Severity: important
> Tags: security upstream
> X-Debbugs-Cc: car...@debian.org, Debian Security Team 
> <t...@security.debian.org>
> Control: found -1 1:1.2.11.dfsg-1
> Control: found -1 1:1.2.11.dfsg-2+deb11u1
> 
> Hi,
> 
> The following vulnerability was published for zlib.
> 
> CVE-2022-37434[0]:
> | zlib through 1.2.12 has a heap-based buffer over-read or buffer
> | overflow in inflate in inflate.c via a large gzip header extra field.
> | NOTE: only applications that call inflateGetHeader are affected. Some
> | common applications bundle the affected zlib source code but may be
> | unable to call inflateGetHeader (e.g., see the nodejs/node reference).
> 
> 
> If you fix the vulnerability please also make sure to include the
> CVE (Common Vulnerabilities & Exposures) id in your changelog entry.
> 
> For further information see:
> 
> [0] https://security-tracker.debian.org/tracker/CVE-2022-37434
>     https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-37434
> [1] 
> https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1
> [2] https://github.com/ivd38/zlib_overflow
> 
> Please adjust the affected versions in the BTS as needed.

There is an additional followup commit due to regression in curl:
https://github.com/curl/curl/issues/9271

https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d

Regards,
Salvatore

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