Debian alert DLA-2773-1 (curl)

From:
             
 
Thorsten Alteholz <debian@alteholz.de>
To:
             
 
debian-lts-announce@lists.debian.org
Subject:
             
 
[SECURITY] [DLA 2773-1] curl security update
Date:
             
 
Thu, 30 Sep 2021 21:58:49 +0000
Message-ID:
             
 
<alpine.DEB.2.21.2109302155510.16295@postfach.intern.alteholz.me>
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Debian LTS Advisory DLA-2773-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                    Thorsten Alteholz
September 30, 2021                            https://wiki.debian.org/LTS
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Package        : curl
Version        : 7.52.1-5+deb9u16
CVE ID         : CVE-2021-22946 CVE-2021-22947


Two issues have been found in curl, a command line tool and an easy-to-use 
client-side library for transferring data with URL syntax.

CVE-2021-22946
      Crafted answers from a server might force clients to not use TLS on
      connections though TLS was required and expected.

CVE-2021-22947
      When using STARTTLS to initiate a TLS connection, the server might
      send multiple answers before the TLS upgrade and such the client
      would handle them as being trusted. This could be used by a
      MITM-attacker to inject fake response data.


For Debian 9 stretch, these problems have been fixed in version
7.52.1-5+deb9u16.

We recommend that you upgrade your curl packages.

For the detailed security status of curl please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/curl

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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