what you don't know can hurt you

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
Login or Register to add favorites

File Archive:

September 2020

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close