Low: openssl

2021-07-14T20:39:00
ID ALAS2-2021-1687
Type amazon
Reporter Amazon
Modified 2021-07-15T21:41:00

Description

Issue Overview:

An integer overflow was found in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. As per upstream:
No EC algorithms are affected.
Attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely.
Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway.
Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME (CVE-2019-1551)

Affected Packages:

openssl

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

New Packages:

aarch64:  
    openssl-1.0.2k-19.amzn2.0.7.aarch64  
    openssl-libs-1.0.2k-19.amzn2.0.7.aarch64  
    openssl-devel-1.0.2k-19.amzn2.0.7.aarch64  
    openssl-static-1.0.2k-19.amzn2.0.7.aarch64  
    openssl-perl-1.0.2k-19.amzn2.0.7.aarch64  
    openssl-debuginfo-1.0.2k-19.amzn2.0.7.aarch64

i686:  
    openssl-1.0.2k-19.amzn2.0.7.i686  
    openssl-libs-1.0.2k-19.amzn2.0.7.i686  
    openssl-devel-1.0.2k-19.amzn2.0.7.i686  
    openssl-static-1.0.2k-19.amzn2.0.7.i686  
    openssl-perl-1.0.2k-19.amzn2.0.7.i686  
    openssl-debuginfo-1.0.2k-19.amzn2.0.7.i686

src:  
    openssl-1.0.2k-19.amzn2.0.7.src

x86_64:  
    openssl-1.0.2k-19.amzn2.0.7.x86_64  
    openssl-libs-1.0.2k-19.amzn2.0.7.x86_64  
    openssl-devel-1.0.2k-19.amzn2.0.7.x86_64  
    openssl-static-1.0.2k-19.amzn2.0.7.x86_64  
    openssl-perl-1.0.2k-19.amzn2.0.7.x86_64  
    openssl-debuginfo-1.0.2k-19.amzn2.0.7.x86_64