CVE-2020-4044 (GCVE-0-2020-4044)
Vulnerability from cvelistv5
Published
2020-06-30 15:55
Modified
2024-08-04 07:52
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-121 - Stack-based Buffer Overflow
Summary
The xrdp-sesman service before version 0.9.13.1 can be crashed by connecting over port 3350 and supplying a malicious payload. Once the xrdp-sesman process is dead, an unprivileged attacker on the server could then proceed to start their own imposter sesman service listening on port 3350. This will allow them to capture any user credentials that are submitted to XRDP and approve or reject arbitrary login credentials. For xorgxrdp sessions in particular, this allows an unauthorized user to hijack an existing session. This is a buffer overflow attack, so there may be a risk of arbitrary code execution as well.
References
security-advisories@github.com http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00036.html
security-advisories@github.com http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00037.html
security-advisories@github.com https://github.com/neutrinolabs/xrdp/commit/0c791d073d0eb344ee7aaafd221513dc9226762c Patch, Third Party Advisory
security-advisories@github.com https://github.com/neutrinolabs/xrdp/releases/tag/v0.9.13.1 Release Notes, Third Party Advisory
security-advisories@github.com https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-j9fv-6fwf-p3g4 Third Party Advisory
security-advisories@github.com https://lists.debian.org/debian-lts-announce/2020/08/msg00015.html
security-advisories@github.com https://www.debian.org/security/2020/dsa-4737
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00036.html
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00037.html
af854a3a-2127-422b-91ae-364da2661108 https://github.com/neutrinolabs/xrdp/commit/0c791d073d0eb344ee7aaafd221513dc9226762c Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/neutrinolabs/xrdp/releases/tag/v0.9.13.1 Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-j9fv-6fwf-p3g4 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2020/08/msg00015.html
af854a3a-2127-422b-91ae-364da2661108 https://www.debian.org/security/2020/dsa-4737
Impacted products
Vendor Product Version
neutrinolabs xrdp Version: < 0.9.13.1
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}


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