Low: curl

Issue Overview:

curl is vulnerable to a buffer overrun in the NTLM authentication code. The internal function Curl_ntlm_core_mk_nt_hash multiplies the length of the password by two (SUM) to figure out how large temporary storage area to allocate from the heap. The length value is then subsequently used to iterate over the password and generate output into the allocated storage buffer. On systems with a 32 bit size_t, the math to calculate SUM triggers an integer overflow when the password length exceeds 2GB (2^31 bytes). This integer overflow usually causes a very small buffer to actually get allocated instead of the intended very huge one, making the use of that buffer end up in a heap buffer overflow. (This bug is almost identical to CVE-2017-8816.)(CVE-2018-14618)

Affected Packages:

curl

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

aarch64:  
    curl-7.55.1-12.amzn2.0.7.aarch64  
    libcurl-7.55.1-12.amzn2.0.7.aarch64  
    libcurl-devel-7.55.1-12.amzn2.0.7.aarch64  
    curl-debuginfo-7.55.1-12.amzn2.0.7.aarch64  
  
i686:  
    curl-7.55.1-12.amzn2.0.7.i686  
    libcurl-7.55.1-12.amzn2.0.7.i686  
    libcurl-devel-7.55.1-12.amzn2.0.7.i686  
    curl-debuginfo-7.55.1-12.amzn2.0.7.i686  
  
src:  
    curl-7.55.1-12.amzn2.0.7.src  
  
x86_64:  
    curl-7.55.1-12.amzn2.0.7.x86_64  
    libcurl-7.55.1-12.amzn2.0.7.x86_64  
    libcurl-devel-7.55.1-12.amzn2.0.7.x86_64  
    curl-debuginfo-7.55.1-12.amzn2.0.7.x86_64  

Additional References

Red Hat: CVE-2018-14618

Mitre: CVE-2018-14618