Vulnerability CVE-2021-33570
Published: 2021-05-25   Modified: 2021-05-26

Description:
Postbird 0.8.4 allows stored XSS via the onerror attribute of an IMG element in any PostgreSQL database table. This can result in reading local files via vectors involving XMLHttpRequest and open of a file:/// URL, or discovering PostgreSQL passwords via vectors involving Window.localStorage and savedConnections.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Postbird 0.8.4 Cross Site Scripting / Local File Inclusion
Debshubra Chakra...
27.05.2021

Type:

CWE-79

 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Postbird project -> Postbird 

 References:
https://github.com/Tridentsec-io/postbird
https://github.com/Paxa/postbird/issues/134
https://github.com/Paxa/postbird/issues/132
https://github.com/Paxa/postbird/issues/133
http://packetstormsecurity.com/files/162831/Postbird-0.8.4-Cross-Site-Scripting-Local-File-Inclusion.html
http://packetstormsecurity.com/files/162872/Postbird-0.8.4-XSS-LFI-Insecure-Data-Storage.html
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