Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote…
Priority MEDIUM 55CWE-189Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.
Summary
Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a Remote Desktop Protocol (RDP) request with a small length field.
Why it matters now
EPSS 0.13128 96th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 3 advisories
- RHSA-2008:0576 Released 2008-07-24 · Red Hat rating Moderaterdesktop security update
- Red Hat Desktop version 3 rdesktop-1.2.0-3, rdesktop-1.2.0-3.i386
- Red Hat Enterprise Linux AS version 3 rdesktop-1.2.0-3, rdesktop-1.2.0-3.i386, rdesktop-1.2.0-3.ia64 +1
- Red Hat Enterprise Linux ES version 3 rdesktop-1.2.0-3, rdesktop-1.2.0-3.i386, rdesktop-1.2.0-3.ia64
- Red Hat Enterprise Linux WS version 3 rdesktop-1.2.0-3, rdesktop-1.2.0-3.i386, rdesktop-1.2.0-3.ia64
- RHSA-2008:0575 Released 2008-07-24 · Red Hat rating Moderaterdesktop security update
- Red Hat Enterprise Linux (v. 5 server) rdesktop-1.4.1-6, rdesktop-1.4.1-6.i386, rdesktop-1.4.1-6.ia64 +1
- Red Hat Enterprise Linux Desktop (v. 5 client) rdesktop-1.4.1-6, rdesktop-1.4.1-6.i386
- RHSA-2008:0725 Released 2008-07-24 · Red Hat rating Moderaterdesktop security and bug fix update
- Red Hat Enterprise Linux AS version 4 rdesktop-1.3.1-9, rdesktop-1.3.1-9.i386, rdesktop-1.3.1-9.ia64 +1
- Red Hat Enterprise Linux Desktop version 4 rdesktop-1.3.1-9, rdesktop-1.3.1-9.i386
- Red Hat Enterprise Linux ES version 4 rdesktop-1.3.1-9, rdesktop-1.3.1-9.i386, rdesktop-1.3.1-9.ia64
- Red Hat Enterprise Linux WS version 4 rdesktop-1.3.1-9, rdesktop-1.3.1-9.i386, rdesktop-1.3.1-9.ia64
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2008:0576 |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2008:0575 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2008:0576 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2008:0725 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2008:0575 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2008:0725 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2008:0576 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2008:0725 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2008:0576 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2008:0725 |
Timeline
- 2026-10-02 Threatist record created from CVE-2008-1801
- 2026-10-03 Alias added: GHSA-fmmp-hrq3-7r3f
References
Exploit 2
Advisory 13
More Rdesktop vulnerabilities
- TI-2008-01729 Buffer overflow in the process_redirect_pdu (rdp.c) function in rdesktop 1.5.0 allows… CVSS 2.0HIGH 9.3
- TI-2018-14304 rdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global… CVSS 3.0CRITICAL 9.8
- TI-2018-14303 rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a… CVSS 3.0CRITICAL 9.8
- TI-2018-14302 rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a… CVSS 3.0CRITICAL 9.8
- TI-2018-14299 rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a… CVSS 3.1CRITICAL 9.8
- TI-2018-14301 rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2008-1801 · CVE Program
- CVE-2008-1801 · NVD
- FIRST EPSS
- GHSA-fmmp-hrq3-7r3f · GitHub Advisory Database · CC BY 4.0
- CVE-2008-1801 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences