CVE-2005-3346: Buffer overflow in the environment variable substitution code in main.c in OSH 1.7-14 allows local users to in

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HIGH 7.2WATCHLISTDOWNGRADE

CVE-2005-3346 is a high-severity flaw (CVSS 7.2) affecting osh. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the environment variable substitution code in main.c in OSH 1.7-14 allows local users to inject arbitrary environment variables, such as LD_PRELOAD, via pathname arguments of the form "$VAR/EVAR=arg", which cause the EVAR portion to be appended to a buffer returned by a getenv function call.

Why this priority

High severity
Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Published	2005-11-20
Last modified	2026-06-16

Publisher (CNA): Debian GNU/Linux · Vendor: osh

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-11-20 21:03 UTCPublished CVE record published
2026-06-16 22:16 UTCUpdated Record last modified

osh osh DOWNGRADE

Affected: 1.7.14

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7.14

1. Check installed version

apt-cache policy osh || rpm -q osh || osh --version

2. No fixed release: DOWNGRADE to a release before 1.7.14 (Debian / Ubuntu)

apt-cache madison osh sudo apt install osh=<VERSION_BEFORE_1.7.14> sudo apt-mark hold osh

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list osh sudo dnf downgrade osh-<VERSION_BEFORE_1.7.14> sudo dnf versionlock add osh

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Operator Shell (OSH) 1.7-14 - Local Privilege Escalation

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2005-3346?

osh: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-3346 being exploited?

CVE-2005-3346 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2005-3346 affect?

CVE-2005-3346 affects osh. Severity is high (CVSS 7.2). Buffer overflow in the environment variable substitution code in main.c in OSH 1.7-14 allows local users to inject arbitrary environment variables, such as LD_PRELOAD, via pathname arguments of the form "$VAR/EVAR=arg", which cause the EVAR

How urgent is CVE-2005-3346?

Priority 50/100. High severity; Public exploit reference; On your watchlist

Related CVEs

CVE-2005-3533 HIGH 7.2 UPGRADE Buffer overflow in OSH before 1.7-15 allows local users to execute arbitrary code via a long current working d
CVE-2003-0452 MEDIUM 4.6 UPGRADE Buffer overflows in osh before 1.7-11 allow local users to execute arbitrary code and bypass shell restriction

References

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