MGASA-2019-0313 - Updated libxslt packages fix security vulnerabilities

Publication date: 02 Nov 2019
URL: https://advisories.mageia.org/MGASA-2019-0313.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2019-13117,
     CVE-2019-13118,
     CVE-2019-18197

Updated libxslt package fixes security vulnerabilities:

* In numbers.c in libxslt 1.1.33, an xsl:number with certain format strings
  could lead to a uninitialized read in xsltNumberFormatInsertNumbers. This
  could allow an attacker to discern whether a byte on the stack contains
  the characters A, a, I, i, or 0, or any other character (CVE-2019-13117).

* In numbers.c in libxslt 1.1.33, a type holding grouping characters of an
  xsl:number instruction was too narrow and an invalid character/length
  combination could be passed to xsltNumberFormatDecimal, leading to a read
  of uninitialized stack data (CVE-2019-13118).

* 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).

References:
- https://bugs.mageia.org/show_bug.cgi?id=25643
- https://ubuntu.com/security/notices/USN-4164-1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13117
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13118
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18197

SRPMS:
- 7/core/libxslt-1.1.33-2.1.mga7