CVE-2018-8796
CVE-2018-8796 is a high-severity vulnerability in Rdesktop with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Rdesktop
- Published:
- Last modified:
Description
rdesktop versions up to and including v1.8.3 contain an Out-Of-Bounds Read in function process_bitmap_updates() that results in a Denial of Service (segfault).
Frequently asked questions
- What is CVE-2018-8796?
- rdesktop versions up to and including v1.8.3 contain an Out-Of-Bounds Read in function process_bitmap_updates() that results in a Denial of Service (segfault).
- How severe is CVE-2018-8796?
- CVE-2018-8796 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-8796 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-8796?
- CVE-2018-8796 primarily affects Rdesktop. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-8796?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-8796 published?
- CVE-2018-8796 was published on 2019-02-05 and last updated on 2026-06-17.
References
- 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
Affected products (3)
- cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
More vulnerabilities in Rdesktop
- CVE-2018-20182 — Critical (CVSS 9.8): rdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global variables in the function…
- CVE-2018-20181 — Critical (CVSS 9.8): rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in…
- CVE-2018-20180 — Critical (CVSS 9.8): rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in…
- CVE-2018-20179 — Critical (CVSS 9.8): rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in…
- CVE-2018-20177 — Critical (CVSS 9.8): rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in…
- CVE-2018-8800 — Critical (CVSS 9.8): rdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function ui_clip_handle_data()…
Other CWE-125 (Out-of-bounds Read) vulnerabilities
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- CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
- CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
- CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
- CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
- CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…