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Debian LTS: Security Advisory for curl (DLA-2773-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'curl' package(s) announced via the DLA-2773-1 advisory.
Insight
Insight
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.
Affected Software
Affected Software
'curl' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, these problems have been fixed in version 7.52.1-5+deb9u16. We recommend that you upgrade your curl packages.