Fedora 34: 2021-c5584b92d4 Moderate: curl Protocol Issues and Mitigations

curl is a command line tool for transferring data with URL syntax, supporting

FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMAP,

SMTP, POP3 and RTSP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP

uploading, HTTP form based upload, proxies, cookies, user+password

authentication (Basic, Digest, NTLM, Negotiate, kerberos...), file transfer

resume, proxy tunneling and a busload of other useful tricks.

- CVE-2021-22947 - STARTTLS protocol injection via MITM - CVE-2021-22946 -protocol downgrade required TLS bypassed - CVE-2021-22945 - use-after-free and

double-free in MQTT sending

* Fri Sep 17 2021 Kamil Dudka - 7.76.1-12

- fix STARTTLS protocol injection via MITM (CVE-2021-22947)

- fix protocol downgrade required TLS bypass (CVE-2021-22946)

- fix use-after-free and double-free in MQTT sending (CVE-2021-22945)

* Wed Jul 21 2021 Kamil Dudka - 7.76.1-7

- fix TELNET stack contents disclosure again (CVE-2021-22925)

- fix bad connection reuse due to flawed path name checks (CVE-2021-22924)

* Wed Jul 21 2021 Kamil Dudka - 7.76.1-5

- disable metalink support to fix the following vulnerabilities

CVE-2021-22923 - metalink download sends credentials

CVE-2021-22922 - wrong content via metalink not discarded

[ 1 ] Bug #2004362 - CVE-2021-22945 curl: use-after-free and double-free in MQTT sending [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2004362

[ 2 ] Bug #2004363 - CVE-2021-22947 curl: STARTTLS protocol injection via MITM [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2004363

[ 3 ] Bug #2004927 - CVE-2021-22946 curl: protocol downgrade required TLS bypassed [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2004927

su -c 'dnf upgrade --advisory FEDORA-2021-c5584b92d4' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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