Low: curl

Issue Overview:

A heap use-after-free flaw was found in curl related to closing an easy handle. When closing and cleaning up an ‘easy’ handle in the Curl_close() function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct. (CVE-2018-16840)

Curl is vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service. (CVE-2018-16839)

Curl is vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service. (CVE-2018-16842)

Affected Packages:

curl

Issue Correction:
Run yum update curl to update your system.

New Packages:

i686:  
    libcurl-devel-7.53.1-16.86.amzn1.i686  
    libcurl-7.53.1-16.86.amzn1.i686  
    curl-7.53.1-16.86.amzn1.i686  
    curl-debuginfo-7.53.1-16.86.amzn1.i686  
  
src:  
    curl-7.53.1-16.86.amzn1.src  
  
x86_64:  
    libcurl-7.53.1-16.86.amzn1.x86_64  
    libcurl-devel-7.53.1-16.86.amzn1.x86_64  
    curl-7.53.1-16.86.amzn1.x86_64  
    curl-debuginfo-7.53.1-16.86.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-16839, CVE-2018-16840, CVE-2018-16842

Mitre: CVE-2018-16839, CVE-2018-16840, CVE-2018-16842