Vulmon
Amazon Linux 2 Security Advisory: ALAS-2020-1535
Advisory Release Date: 2020-10-22 18:26 Pacific
Advisory Updated Date: 2020-10-22 22:35 Pacific
Severity:
Medium
Issue Overview:
libxslt through 1.1.33 allows bypass of a protection mechanism because callers of xsltCheckRead and xsltCheckWrite permit access even upon receiving a -1 error code. xsltCheckRead can return -1 for a crafted URL that is not actually invalid and is subsequently loaded. (CVE-2019-11068)
In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed. (CVE-2019-18197)
Affected Packages:
libxslt
Issue Correction:
Run yum update libxslt to update your system.
New Packages:
aarch64:
libxslt-1.1.28-6.amzn2.aarch64
libxslt-devel-1.1.28-6.amzn2.aarch64
libxslt-python-1.1.28-6.amzn2.aarch64
libxslt-debuginfo-1.1.28-6.amzn2.aarch64
i686:
libxslt-1.1.28-6.amzn2.i686
libxslt-devel-1.1.28-6.amzn2.i686
libxslt-python-1.1.28-6.amzn2.i686
libxslt-debuginfo-1.1.28-6.amzn2.i686
src:
libxslt-1.1.28-6.amzn2.src
x86_64:
libxslt-1.1.28-6.amzn2.x86_64
libxslt-devel-1.1.28-6.amzn2.x86_64
libxslt-python-1.1.28-6.amzn2.x86_64
libxslt-debuginfo-1.1.28-6.amzn2.x86_64