libxml2 is affected by a denial-of-service (DoS) vulnerability. In xpath.c:xmlXPathCompOpEval()
, the cases XPATH_OP_AND
and XPATH_OP_OR
does not check for NULL values when assigning valuePop(ctxt)
which can result in a NULL pointer deference leading to a denial of service condition.
access.redhat.com/errata/RHSA-2019:1543
bugs.debian.org/cgi-bin/bugreport.cgi?bug=901817
bugzilla.redhat.com/show_bug.cgi?id=1595985
gitlab.gnome.org/GNOME/libxml2/issues/10
lists.debian.org/debian-lts-announce/2018/09/msg00035.html
lists.debian.org/debian-lts-announce/2020/09/msg00009.html
security.netapp.com/advisory/ntap-20190719-0002/
usn.ubuntu.com/3739-1/
usn.ubuntu.com/3739-2/