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.
EPSS: 0.006 (44.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Erlang Erlang\/otp
- Erlang Project Erlang/otp — versions < 23.2.3
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@deepsurface.com (Third Party Advisory, x_refsource_MISC)
- security@deepsurface.com (Exploit, Third Party Advisory, x_refsource_MISC)
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.