CVE-2021-24295

moderate-risk
Published 2021-05-17

It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin before 5.153.4. The update_log function in lib/Cleantalk/ApbctWP/Firewall/SFW.php included a vulnerable query that could be injected via the User-Agent Header by manipulating the cookies set by the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin before 5.153.4, sending an initial request to obtain a ct_sfw_pass_key cookie and then manually setting a separate ct_sfw_passed cookie and disallowing it from being reset.

Do I need to act?

!
40.6% chance of exploitation in next 30 days
EPSS score — higher than 59% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Spam Protection\, Antispam\, Firewall

Affected Vendors

Cleantalk

References (4)

Third Party Advisory https://wpscan.com/vulnerability/152171fc-888c-4275-a118-5a1e664ef28b
Exploit https://www.wordfence.com/blog/2021/05/sql-injection-vulnerability-patched-in-cl...
Third Party Advisory https://wpscan.com/vulnerability/152171fc-888c-4275-a118-5a1e664ef28b
Exploit https://www.wordfence.com/blog/2021/05/sql-injection-vulnerability-patched-in-cl...
48
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 17/34 · Moderate
Exposure 5/34 · Minimal