CVE-2021-28940

Public Exploit

Description

Because of a incorrect escaped exec command in MagpieRSS in 0.72 in the /extlib/Snoopy.class.inc file, it is possible to add a extra command to the curl binary. This creates an issue on the /scripts/magpie_debug.php and /scripts/magpie_simple.php page that if you send a specific https url in the RSS URL field, you are able to execute arbitrary commands.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.49% Top 20%
Third-Party Advisory github.com Third-Party Advisory pastebin.com Third-Party Advisory exploit-db.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://pastebin.com/kpzHKKJu third party advisory exploit
https://github.com/kellan/magpierss/blob/04d2a88b97fdba5813d01dc0d56c772d97360bb5/extlib/Snoopy.class.inc#L660 third party advisory
https://www.exploit-db.com/exploits/49643 third party advisory vdb entry exploit

Frequently Asked Questions

What is the severity of CVE-2021-28940?
CVE-2021-28940 has been scored as a critical severity vulnerability.
How to fix CVE-2021-28940?
To fix CVE-2021-28940, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28940 being actively exploited in the wild?
It is possible that CVE-2021-28940 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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