CVE-2018-20177 — Integer Overflow or Wraparound in Rdesktop

CWE-190 — Integer Overflow or WraparoundCWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer8 documents7 sources
Severity
9.8CRITICALNVD
EPSS
5.0%
top 10.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
RdesktopDebian LinuxOpensuse Backports+1 more
Timeline
PublishedMar 15
Latest updateMay 13

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages4 packages

▶Debianrdesktop/rdesktop< 1.8.4-1+3
▶NVDopensuse/leap15.1
▶NVDopensuse/backportssle-15

Also affects: Debian Linux 8.0, 9.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-5cx7-5prr-62vr: rdesktop versions up to and including v1↗2022-05-13
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OSV
CVE-2018-20177: rdesktop versions up to and including v1↗2019-03-15
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CVEList
CVE-2018-20177: rdesktop versions up to and including v1↗2019-03-15
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📋Vendor Advisories

2
Red Hat
rdesktop: Memory corruption in rdp_in_unistr↗2019-01-04
▶
Debian
CVE-2018-20177: rdesktop - rdesktop versions up to and including v1.8.3 contain an Integer Overflow that le...↗2018
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💬Community

2
Bugzilla
CVE-2018-20177 rdesktop: Memory corruption in rdp_in_unistr↗2019-01-29
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Bugzilla
CVE-2018-20174 CVE-2018-20175 CVE-2018-20176 CVE-2018-20177 CVE-2018-20178 CVE-2018-20179 CVE-2018-20180 CVE-2018-20181 CVE-2018-20182 CVE-2018-8791 CVE-2018-8792 CVE-2018-8793 CVE-2018-8794 CVE-2018-↗2019-01-29
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CVE-2018-20177 — Integer Overflow or Wraparound | cvebase