Deserialization in Cacti
CVE-2023-30534
Cacti is an open source operational monitoring and fault management framework. There are two instances of insecure deserialization in Cacti version 1.2.24. While a viable gadget chain exists in Cacti’s vendor directory (phpseclib), the necessary gadgets are not included, making them inaccessible and the insecure deserializations not exploitable. Each instance of insecure deserialization is due to using the unserialize function without sanitizing the user input. Cacti has a “safe” deserialization that attempts to sanitize the content and check for specific values before calling unserialize, but it isn’t used in these instances. The vulnerable code lies in graphs_new.php, specifically within the host_new_graphs_save function. This issue has been addressed in version 1.2.25. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.029 (86.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.029 · change: +0.003
Affected products
- Cacti — versions < 1.2.25
- Fedoraproject Fedora — versions 37, 38
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/Cacti/cacti/security/advisories/GHSA-77rf-774j-6h3p (Exploit, Vendor Advisory)
- www.fastly.com/blog/cve-2023-30534-insecure-deserialization-in-cacti-prior-to-1… (Exploit)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List)
Frequently asked questions
- What is CVE-2023-30534?
- CVE-2023-30534 is a medium-severity vulnerability in Cacti, classified under Deserialization of Untrusted Data. CVSS score: 4.3/10. Published 2023-09-05.
- How severe is CVE-2023-30534?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2023-30534 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.