Bug 1516759 - (CVE-2017-16927) CVE-2017-16927 xrdp: Buffer-overflow in scp_v0s_accept function in session manager
CVE-2017-16927 xrdp: Buffer-overflow in scp_v0s_accept function in session ma...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20171121,repor...
: Security
Depends On: 1516760 1516761
Blocks:
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Reported: 2017-11-23 06:11 EST by Andrej Nemec
Modified: 2017-11-23 06:11 EST (History)
2 users (show)

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Description Andrej Nemec 2017-11-23 06:11:14 EST
The scp_v0s_accept function in sesman/libscp/libscp_v0.c in the session manager in xrdp through 0.9.4 uses an untrusted integer as a write length, which allows local users to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a crafted input stream.

Upstream patch:

https://github.com/neutrinolabs/xrdp/pull/958/commits/ebd0510a7d4dab906b6e01570205dfa530d1f7bf

References:

https://groups.google.com/forum/#!topic/xrdp-devel/PmVfMuy_xBA
Comment 1 Andrej Nemec 2017-11-23 06:11:58 EST
Created xrdp tracking bugs for this issue:

Affects: epel-all [bug 1516760]
Affects: fedora-all [bug 1516761]

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