BDU:2021-01123CriticalConfirmedExploit available
BDU
BDU
Data Bank of Information Security Threats
BDU ФСТЭК is the authoritative Russian source of vulnerability information, covering both international CVEs relevant to domestic software and unique Russian-disclosed issues. Entries contain severity, affected product lists (in Russian), and mitigation recommendations.
Region
RU
Updates
1 ч
License
Открытые данные
Russian federal catalog of vulnerabilities and threats maintained by FSTEC. Required for compliance with Russian information security regulations (Приказ №17, Приказ №21).
https://bdu.fstec.ru →Share link
Anyone with the link can open this vulnerability.
Уязвимость почтового сервера Microsoft Exchange Server связана с недостаточной проверкой поступающих запросов. Эксплуатация уязвимости може…
CVSS
9.8
Critical
EPSS
0.00
p0
Published
2021-01-01
Updated
2021-01-01
Description
Уязвимость почтового сервера Microsoft Exchange Server связана с недостаточной проверкой поступающих запросов. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, осуществить SSRF-атаку с помощью специально сформированных HTTPS-запросов (содержащих вредоносные файлы cookie X-AnonResource-Backend и искаженные файлы cookie X-BEResource)
Tags · CWE
Pre-auth
Affected products
Microsoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange serverMicrosoft corp Microsoft exchange server
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Timeline
2021-01-01
Published
2021-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.000 · p0
Known exploited (KEV)
No
Known exploits — Сканер-ВС
BDU:2021-01123
bdu_exploit · https://bdu.fstec.ru/vul
49637
exploitdb · https://www.exploit-db.com/exploits/49637
49663
exploitdb · https://www.exploit-db.com/exploits/49663
49879
exploitdb · https://www.exploit-db.com/exploits/49879
49895
exploitdb · https://www.exploit-db.com/exploits/49895
CVE-2021-26855
github-poc · https://github.com/SimoesCTT/CTT-Exchange-RCE-v1.0---Microsoft-Exchange-Exploit-CVSS-10.0-CRITICAL-CVE-2021-26855-CVE-2021-27065
Affected software
| Product | Vendor | Status |
|---|---|---|
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
| microsoft exchange server | microsoft corp | Tracked |
Source databases
BDU
BDU
Data Bank of Information Security Threats
BDU ФСТЭК is the authoritative Russian source of vulnerability information, covering both international CVEs relevant to domestic software and unique Russian-disclosed issues. Entries contain severity, affected product lists (in Russian), and mitigation recommendations.
Region
RU
Updates
1 ч
License
Открытые данные
Russian federal catalog of vulnerabilities and threats maintained by FSTEC. Required for compliance with Russian information security regulations (Приказ №17, Приказ №21).
https://bdu.fstec.ru →MSR
MSR
Microsoft Security Response Center
The Security Update Guide is the source of truth for vulnerabilities in Microsoft products — KB article numbers, impacted builds and replacement patches. MSRC also assigns the MSRC-specific exploitability index used alongside CVSS.
Region
US
Updates
Patch Tuesday + ad-hoc
License
Proprietary
Microsoft's Security Update Guide, covering Windows, Office, Azure, SQL Server, Exchange and other first-party products.
https://msrc.microsoft.com/update-guide →Related vulnerabilities