CVE-2018-8794: check point software technologies ltd. rdesktop Integer Overflow to Buffer Overflow
CVSS: 9.8v3.1CriticalModified
AliasesALPINE-CVE-2018-8794UBUNTU-CVE-2018-8794DEBIAN-CVE-2018-8794
Published 05-02-2019Last modified 17-09-2024
Vulnerability summary
CVE-2018-8794 is a critical (CVSS 9.8) Integer Overflow to Buffer Overflow vulnerability in check point software technologies ltd. rdesktop. EPSS estimates a 6.66% chance of exploitation in the next 30 days, higher than 93.8% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
6.66%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 2Timeline
- 05-02-2019PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to an Out-Of-Bounds Write in function process_bitmap_updates() and results in a memory corruption and possibly even a remote code execution.
CVSS metrics
5 scores · 4 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
6.66%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
0.00 pp
From 6.66% on 19-09-2026
19-09-202619-10-2026
EPSS score6.66%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-680Integer Overflow to Buffer OverflowThe product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.
- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Debian2 products
- rdesktop< 1.8.4-1
- debian_linuxEOL8.0 | 9.0
Alpine1 product
- rdesktop< 1.8.6-r0
Check point software technologies ltd.1 product
- rdesktopAll versions up to and including v1.8.3
Opensuse1 product
- leapEOL15.1
Rdesktop1 product
- rdesktop≤ 1.8.3
Ubuntu1 product
- rdesktopAll versions (No fix recorded)
6 vendors · 7 products
References
12 links- github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1X Refsource MISCPatchThird Party Advisory
- research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/X Refsource CONFIRMThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/02/msg00030.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory