9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
This upload to Debian squeeze-lts fixes three issues found in the libxml2
package.
(1) CVE-2015-1819 / #782782
Florian Weimer from Red Hat reported an issue against libxml2, where a
parser which uses libxml2 chokes on a crafted XML document, allocating
gigabytes of data. This is a fine line issue between API misuse and a bug
in libxml2. This issue got addressed in libxml2 upstream and the patch
has been backported to libxml2 in squeeze-lts.
(2) #782985
Jun Kokatsu reported an out-of-bounds memory access in libxml2. By
entering an unclosed html comment the libxml2 parser didn’t stop parsing
at the end of the buffer, causing random memory to be included in the
parsed comment that was returned to the evoking application.
In the Shopify application (where this issue was originally discovered),
this caused ruby objects from previous http requests to be disclosed in
the rendered page.
(3) #783010
Michal Zalewski reported another out-of-bound reads issue in libxml2 that
did not cause any crashes but could be detected under ASAN and Valgrind.
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P