exploit the possibilities

Microsoft Skype For Business DNS Query

Microsoft Skype For Business DNS Query
Posted Dec 6, 2019
Authored by Alphan Yavas

Microsoft Skype for Business latest versions affected from external service interaction (DNS) vulnerability. A remote attacker could force the vulnerable server to send DNS request to any remote server attacker wants.

tags | exploit, remote
MD5 | 695c9907241fa97e0fd828f91598f381

Microsoft Skype For Business DNS Query

Change Mirror Download
I. VULNERABILITY
-------------------------
Microsoft Skype for Business External Service Interaction (DNS)
Latest Version

II. CVE REFERENCE
-------------------------
Not Assigned Yet

III. VENDOR
-------------------------
https://www.microsoft.com

IV. TIMELINE
-------------------------
28/11/2019 Vulnerability discovered
03/12/2019 Vendor contacted
04/12/2019 Microsoft replay that “We determined that this behavior is
considered to be by design.”

V. CREDIT
-------------------------
Alphan Yavas from Biznet Bilisim A.S.

VI. DESCRIPTION
-------------------------
Microsoft Skype for Business latest versions affected from external
service interaction(DNS) vulnerability. A remote attacker could force
the vulnerable server to send DNS request to any remote server
attacker wants.

VII. PROOF OF CONCEPT
-------------------------
Affected Component:
Path(inurl): /Dialin/Conference.aspx
Parameter: Username

Login page of Skype for Business affected from external service
interaction (DNS) vulnerability. If username is being sent with
following format victim server will send out DNS queries to xxx
domain. (xxx is the domain which you want to send request from
server)

username: ssrf.xxx.com\pentest
password: (doesn't matter)

Reference: https://portswigger.net/kb/issues/00300200_external-service-interaction-dns

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

January 2020

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2016 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close