CVE-2017-11742 (High) detected in expat-expat-2.2.1

[mend-bolt-for-github]

CVE-2017-11742 - High Severity Vulnerability

Vulnerable Library - expatexpat-2.2.1

Fast XML parser library in C

Library home page: https://sourceforge.net/projects/expat/

Found in HEAD commit: 0b8ca0156130fe8d67f2fdd42af9d2f264587034

Library Source Files (17)

* The source files were matched to this source library based on a best effort match. Source libraries are selected from a list of probable public libraries.

• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/examples/outline.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/xmltok.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/siphash.h
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/expat_external.h
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/xmlwf.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/xmlparse.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/unixfilemap.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/examples/elements.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/readfilemap.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/win32filemap.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/xmlrole.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/winconfig.h
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/filemap.h
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/xmlfile.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/xmlwf/codepage.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/xmltok_impl.c
• /ecosurvivalserver/node_modules/node-expat/deps/libexpat/lib/expat.h

Vulnerability Details

The writeRandomBytes_RtlGenRandom function in xmlparse.c in libexpat in Expat 2.2.1 and 2.2.2 on Windows allows local users to gain privileges via a Trojan horse ADVAPI32.DLL in the current working directory because of an untrusted search path, aka DLL hijacking.

Publish Date: 2017-07-30

URL: CVE-2017-11742

CVSS 3 Score Details (7.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Change files

Origin: libexpat/libexpat@d70eabf

Release Date: 2017-07-15

Fix Resolution: Replace or update the following files: Changes, xmlparse.c

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