Buffer overflow in Objective Open Cbor Run-Time Project
CVE-2020-24753
A memory corruption vulnerability in Objective Open CBOR Run-time (oocborrt) in versions before 2020-08-12 could allow an attacker to execute code via crafted Concise Binary Object Representation (CBOR) input to the cbor2json decoder. An uncaught error while decoding CBOR Major Type 3 text strings leads to the use of an attacker-controllable uninitialized stack value. This can be used to modify memory, causing a crash or potentially exploitable heap corruption.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (85.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.0% 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: 0.026 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/objsys/oocborrt/commit/539851c66778f68a244633985f6f8d0df94ea3b3 (Patch, Third Party Advisory)
- warcollar.com/cve-2020-24753.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-24753?
- CVE-2020-24753 is a critical-severity vulnerability in Objective Open Cbor Run-Time Project, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2020-09-17.
- How severe is CVE-2020-24753?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-24753 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.