Vulmon
Amazon Linux 2 Security Advisory: ALAS-2021-1700
Advisory Release Date: 2021-09-08 23:35 Pacific
Advisory Updated Date: 2021-09-15 17:41 Pacific
A flaw was found in the way curl handled telnet protocol option for sending environment variables, which could lead to sending of uninitialized data from a stack-based buffer to the server. This issue leads to potentially revealing sensitive internal information to the server using a clear-text network protocol. (CVE-2021-22898)
A flaw was found in curl in the way curl handles a file hash mismatch after downloading content using the Metalink feature. This flaw allows malicious actors controlling a hosting server to trick users into downloading malicious content. The highest threat from this vulnerability is to integrity. (CVE-2021-22922)
A flaw was found in curl in the way curl handles credentials when downloading content using the Metalink feature. This flaw allows malicious actors controlling a hosting server to gain access to credentials provided while downloading content without the user's knowledge. The highest threat from this vulnerability is to confidentiality. (CVE-2021-22923)
A flaw was found in libcurl in the way libcurl handles previously used connections without accounting for 'issuer cert' and comparing the involved paths case-insensitively. This flaw allows libcurl to use the wrong connection. The highest threat from this vulnerability is to confidentiality. (CVE-2021-22924)
A flaw was found in the way curl handled telnet protocol option for sending environment variables, which could lead to sending of uninitialized data from a stack-based buffer to the server. This issue leads to potentially revealing sensitive internal information to the server using a clear-text network protocol. (CVE-2021-22925)
Affected Packages:
curl
Issue Correction:
Run yum update curl to update your system.
aarch64:
curl-7.76.1-7.amzn2.0.2.aarch64
libcurl-7.76.1-7.amzn2.0.2.aarch64
libcurl-devel-7.76.1-7.amzn2.0.2.aarch64
curl-debuginfo-7.76.1-7.amzn2.0.2.aarch64
i686:
curl-7.76.1-7.amzn2.0.2.i686
libcurl-7.76.1-7.amzn2.0.2.i686
libcurl-devel-7.76.1-7.amzn2.0.2.i686
curl-debuginfo-7.76.1-7.amzn2.0.2.i686
src:
curl-7.76.1-7.amzn2.0.2.src
x86_64:
curl-7.76.1-7.amzn2.0.2.x86_64
libcurl-7.76.1-7.amzn2.0.2.x86_64
libcurl-devel-7.76.1-7.amzn2.0.2.x86_64
curl-debuginfo-7.76.1-7.amzn2.0.2.x86_64