CVE-2018-20177: Buffer Overflow
First published: Fri Mar 15 2019(Updated: )
rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() and results in memory corruption and possibly even a remote code execution.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/rdesktop | 1.8.6-2 1.9.0-2 | |
| Ubuntu Desktop File Utils | <=1.8.3 | |
| Debian | =8.0 | |
| Debian | =9.0 | |
| SUSE Backports | =sle-15-sp1 | |
| SUSE Linux | =15.1 |
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Reference Links
- https://github.com/rdesktop/rdesktop/commit/766ebcf6f23ccfe8323ac10242ae6e127d4505d2
- https://security-tracker.debian.org/tracker/CVE-2018-20177
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html
- http://www.securityfocus.com/bid/106938
- https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1
- https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
- https://security.gentoo.org/glsa/201903-06
- https://www.debian.org/security/2019/dsa-4394
Frequently Asked Questions
What is the severity of CVE-2018-20177?
CVE-2018-20177 is considered a high severity vulnerability due to the potential for remote code execution.
How do I fix CVE-2018-20177?
To fix CVE-2018-20177, update to rdesktop version 1.8.6-2 or 1.9.0-2 or later.
Which versions of rdesktop are affected by CVE-2018-20177?
All versions of rdesktop up to and including v1.8.3 are affected by CVE-2018-20177.
What type of vulnerability is CVE-2018-20177?
CVE-2018-20177 is an integer overflow vulnerability that leads to a heap-based buffer overflow.
Can CVE-2018-20177 lead to memory corruption?
Yes, CVE-2018-20177 can lead to memory corruption and possibly allow for remote code execution.
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- package-manager/debian
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- vendor/debian
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- vendor/opensuse
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