Local users can perform a buffer overflow attack against the xrdp-sesman service and then impersonate it
Published Jun 30, 2020
7.8
HIGHCVSS 3.1
EPSS 2.40%
Description
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.
Affected products
-
- Version < 0.9.13.1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Neutrinolabs | Xrdp | n/a |
|
- < 0.9.13.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (7)
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00036.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00037.html vendor-advisoryx_refsource_SUSE
- https://github.com/neutrinolabs/xrdp/commit/0c791d073d0eb344ee7aaafd221513dc9226762c x_refsource_MISCPatchThird Party Advisory
- https://github.com/neutrinolabs/xrdp/releases/tag/v0.9.13.1 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-j9fv-6fwf-p3g4 x_refsource_CONFIRMThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00015.html mailing-listx_refsource_MLIST
- https://www.debian.org/security/2020/dsa-4737 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00036.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00037.html | vendor-advisoryx_refsource_SUSE | |
| https://github.com/neutrinolabs/xrdp/commit/0c791d073d0eb344ee7aaafd221513dc9226762c | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/neutrinolabs/xrdp/releases/tag/v0.9.13.1 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-j9fv-6fwf-p3g4 | x_refsource_CONFIRMThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2020/08/msg00015.html | mailing-listx_refsource_MLIST | |
| https://www.debian.org/security/2020/dsa-4737 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.