CVE-2021-28940
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a 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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.30% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-116
- Affected
- magpierss project/magpierss
- Source
- cve@mitre.org
References
- https://github.com/kellan/magpierss/blob/04d2a88b97fdba5813d01dc0d56c772d97360bb5/extlib/Snoopy.class.inc#L660Third Party Advisory
- https://pastebin.com/kpzHKKJuExploit, Third Party Advisory
- https://www.exploit-db.com/exploits/49643Exploit, Third Party Advisory, VDB Entry
- https://github.com/kellan/magpierss/blob/04d2a88b97fdba5813d01dc0d56c772d97360bb5/extlib/Snoopy.class.inc#L660Third Party Advisory
- https://pastebin.com/kpzHKKJuExploit, Third Party Advisory
- https://www.exploit-db.com/exploits/49643Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.