Vulnerability in Erlang Erlang\/otp
CVE-2021-29221
A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with "erlsrv.exe" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Erlang Erlang\/otp
- Erlang Project Erlang/otp — versions < 23.2.3
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/erlang/otp/releases/tag/OTP-23.2.3 (Third Party Advisory)
- deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erl… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29221?
- CVE-2021-29221 is a high-severity vulnerability in Erlang Erlang\/otp, classified under Untrusted Search Path. CVSS score: 7.0/10. Published 2021-04-09.
- How severe is CVE-2021-29221?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2021-29221 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.