exploit the possibilities

Microsec e-Szigno / Netlock Mokka XML Signature Wrapping

Microsec e-Szigno / Netlock Mokka XML Signature Wrapping
Posted Jun 29, 2015
Authored by Imre Rad

Microsec e-Szigno and Netlock Mokka computer applications suffer from a e-akta signature verification weakness. Microsec e-Szigno version older than 3.2.7.12 and Netlock Mokka versions older than 2.7.8.1204 are affected.

tags | advisory
advisories | CVE-2015-3931, CVE-2015-3932
MD5 | 47183f89b14f6e7c9b5b026c7106b06d

Microsec e-Szigno / Netlock Mokka XML Signature Wrapping

Change Mirror Download
In November 2014, SEARCH-LAB Ltd. discovered a security vulnerability in Microsec e-Szigno, and Netlock Mokka computer applications that are used to generate and validate
digital signatures, which are applied within the official Hungarian government processes. The vulnerability affected the „e-akta” signed document file format, where a file with a valid digital signature could be manipulated in a way that the verification software indicated a valid signature while it displayed a different document than the original.

The vulnerability details were disclosed to the affected vendors and the fixed version of the softwares were released in December, 2014.

Affected versions:
Microsec e-Szigno (older than v3.2.7.12): CVE-2015-3931
Netlock Mokka (older than v2.7.8.1204): CVE-2015-3932

The vulnerability is classified as XML Signature Wrapping. It could be triggered by inserting a new "ds:Object" node with arbitrary document payload before the original ds:Object.

The two software implementations were independent, they did not share a common codebase. The reason why both were vulnerable, is not connected to the format specification either, but two different developers independently made mistakes in implementing signatures.

References:
https://www.search-lab.hu/about-us/news/107-37-million-digitally-signed-documents-had-to-be-reverified
https://www.search-lab.hu/eakta
http://www.neih.gov.hu/?q=node/66

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

July 2019

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jul 1st
    34 Files
  • 2
    Jul 2nd
    15 Files
  • 3
    Jul 3rd
    9 Files
  • 4
    Jul 4th
    8 Files
  • 5
    Jul 5th
    2 Files
  • 6
    Jul 6th
    3 Files
  • 7
    Jul 7th
    1 Files
  • 8
    Jul 8th
    15 Files
  • 9
    Jul 9th
    15 Files
  • 10
    Jul 10th
    20 Files
  • 11
    Jul 11th
    17 Files
  • 12
    Jul 12th
    15 Files
  • 13
    Jul 13th
    2 Files
  • 14
    Jul 14th
    1 Files
  • 15
    Jul 15th
    20 Files
  • 16
    Jul 16th
    27 Files
  • 17
    Jul 17th
    6 Files
  • 18
    Jul 18th
    0 Files
  • 19
    Jul 19th
    0 Files
  • 20
    Jul 20th
    0 Files
  • 21
    Jul 21st
    0 Files
  • 22
    Jul 22nd
    0 Files
  • 23
    Jul 23rd
    0 Files
  • 24
    Jul 24th
    0 Files
  • 25
    Jul 25th
    0 Files
  • 26
    Jul 26th
    0 Files
  • 27
    Jul 27th
    0 Files
  • 28
    Jul 28th
    0 Files
  • 29
    Jul 29th
    0 Files
  • 30
    Jul 30th
    0 Files
  • 31
    Jul 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close