What is CVE-2018-20129?

CVE-2018-20129 is a high-severity vulnerability in Dedecms, classified under Code Injection. CVSS score: 8.8/10. Published 2018-12-13.

How severe is CVE-2018-20129?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2018-20129 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Dedecms

CVE-2018-20129

An issue was discovered in DedeCMS V5.7 SP2. uploads/include/dialog/select_images_post.php allows remote attackers to upload and execute arbitrary PHP code via a double extension and a modified ".php" substring, in conjunction with the image/jpeg content type, as demonstrated by the filename=1.jpg.p*hp value.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.082 (94.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Dedecms — versions 5.7
N/a — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-20129?: CVE-2018-20129 is a high-severity vulnerability in Dedecms, classified under Code Injection. CVSS score: 8.8/10. Published 2018-12-13.
How severe is CVE-2018-20129?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-20129 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.