CVE-2018-8788: canonical ubuntu_linux Out-of-bounds Write
CVSS: 9.8v3.0CriticalModified
AliasesUBUNTU-CVE-2018-8788DEBIAN-CVE-2018-8788
Published 29-11-2018Last modified 16-09-2024
Vulnerability summary
CVE-2018-8788 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 7.40% chance of exploitation in the next 30 days, higher than 94.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
7.40%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 9 · Related 6Timeline
- 29-11-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
FreeRDP prior to version 2.0.0-rc4 contains an Out-Of-Bounds Write of up to 4 bytes in function nsc_rle_decode() that results in a memory corruption and possibly even a remote code execution.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/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
7.40%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
0.00 pp
From 7.40% on 18-09-2026
18-09-202618-10-2026
EPSS score7.40%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (research.checkpoint.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- freerdp2< 2.0.0~git20181120.1.e21b72c95+dfsg1-1
- debian_linuxEOL8.0
Ubuntu2 products
- freerdp< 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3 | < 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1
- freerdp2< 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Check point software technologies ltd.1 product
- freerdpAll versions prior to 2.0.0-rc4
Freerdp1 product
- freerdp≤ 1.2.0 | 2.0.0:rc1 | 2.0.0:rc2 | 2.0.0:rc3
5 vendors · 7 products
References
12 links
lists.debian.org/debian-lts-announce/2019/02/msg00015.htmlMailing ListX Refsource MLISTThird Party Advisory- research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/X Refsource CONFIRMExploitThird Party Advisory
- github.com/FreeRDP/FreeRDP/commit/d1112c279bd1a327e8e4d0b5f371458bf2579659X Refsource CONFIRMPatchVendor AdvisoryREPORT