CVE-2003-0826
Published Sep 23, 2003 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
lsh daemon (lshd) does not properly return from certain functions in (1) read_line.c, (2) channel_commands.c, or (3) client_keyexchange.c when long input is provided, which could allow remote attackers to execute arbitrary code via a heap-based buffer overflow attack.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
lsh daemon (lshd) does not properly return from certain functions in (1) read_line.c, (2) channel_commands.c, or (3) client_keyexchange.c when long input is provided, which could allow remote attackers to execute arbitrary code via a heap-based buffer overflow attack.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- 30%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- 20030919 lsh patch (was Re: [Full-Disclosure] new ssh exploit?) ↗
- lists.lysator.liu.se ↗
- bugs.debian.org ↗
- DSA-717 ↗
- 20030920 LSH: Buffer overrun and remote root compromise in lshd ↗
- 20030919 Remote root vuln in lsh 1.4.x ↗
Record history
Published Sep 23, 2003 · Last refreshed Oct 23, 2026