Buffer overflow in Apache Guacamole
CVE-2020-9498
Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.
Vulnerability class: Buffer Overflow
EPSS: 0.007 (50.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Apache Guacamole
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 32, 33
- N/a Apache Guacamole — versions Apache Guacamole 1.1.0 and older
Weakness classification (CWE)
References
- security@apache.org (Mailing List, Third Party Advisory, x_refsource_MISC)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (Third Party Advisory, x_refsource_MISC)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (x_refsource_FEDORA, vendor-advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2020-9498?
- CVE-2020-9498 is a medium-severity vulnerability in Apache Guacamole, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2020-07-02.
- How severe is CVE-2020-9498?
- Medium severity. CVSS v3 base score is 6.7 out of 10.