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Date: Sat, 6 Mar 2021 10:08:56 +0100
From: Fabian Keil <freebsd-listen@...iankeil.de>
To: oss-security@...ts.openwall.com
Subject: Re: Multiple DoS issues fixed in Privoxy 3.0.32 stable
Fabian Keil <freebsd-listen@...iankeil.de> wrote on 2021-02-28:
> Privoxy 3.0.32 fixes multiple DoS issues and a couple of other bugs.
> The issues also affect earlier Privoxy releases.
[...]
> - ssplit(): Remove an assertion that could be triggered with a
> crafted CGI request.
> Commit 2256d7b4d67. OVE-20210203-0001.
> Reported by: Joshua Rogers (Opera)
CVE-2021-20272.
> - cgi_send_banner(): Overrule invalid image types. Prevents a
> crash with a crafted CGI request if Privoxy is toggled off.
> Commit e711c505c48. OVE-20210206-0001.
> Reported by: Joshua Rogers (Opera)
CVE-2021-20273.
> - socks5_connect(): Don't try to send credentials when none are
> configured. Fixes a crash due to a NULL-pointer dereference
> when the socks server misbehaves.
> Commit 85817cc55b9. OVE-20210207-0001.
> Reported by: Joshua Rogers (Opera)
CVE-2021-20274.
> - chunked_body_is_complete(): Prevent an invalid read of size two.
> Commit a912ba7bc9c. OVE-20210205-0001.
> Reported by: Joshua Rogers (Opera)
CVE-2021-20275.
> - Obsolete pcre: Prevent invalid memory accesses with an invalid
> pattern passed to pcre_compile(). Note that the obsolete pcre code
> is scheduled to be removed before the 3.0.33 release. There has been
> a warning since 2008 already.
> Commit 28512e5b624. OVE-20210222-0001.
> Reported by: Joshua Rogers (Opera)
CVE-2021-20276.
Fabian
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