CVE-2011-2684: foo2zjs before 20110722dfsg-3ubuntu1 as packaged in Ubuntu, 20110722dfsg-1 as packaged in Debian unstable, and

Routine

MEDIUM 5.5WATCHLISTMITIGATEDOWNGRADE

CVE-2011-2684 is a medium-severity flaw (CVSS 5.5) affecting foo2zjs, foo2zjs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

foo2zjs before 20110722dfsg-3ubuntu1 as packaged in Ubuntu, 20110722dfsg-1 as packaged in Debian unstable, and 20090908dfsg-5.1+squeeze0 as packaged in Debian squeeze create temporary files insecurely, which allows local users to write over arbitrary files via a symlink attack on /tmp/foo2zjs.

Why this priority

On your watchlist

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-59
Published	2017-10-23
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: rkkda

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

Am I affected?

Timeline

2017-10-23 18:29 UTCPublished CVE record published
2026-06-16 23:31 UTCUpdated Record last modified

rkkda foo2zjs MITIGATE

Affected: 20090908dfsg-5.1\+squeeze0 · 20110722dfsg-1

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy foo2zjs || rpm -q foo2zjs || foo2zjs --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

rkkda foo2zjs DOWNGRADE

Affected: 20110722dfsg-3ubuntu1

Fixed in: no fixed release known

Safe to downgrade to: a release before 20110722dfsg-3ubuntu1

1. Check installed version

apt-cache policy foo2zjs || rpm -q foo2zjs || foo2zjs --version

2. No fixed release: DOWNGRADE to a release before 20110722dfsg-3ubuntu1 (Debian / Ubuntu)

apt-cache madison foo2zjs sudo apt install foo2zjs=<VERSION_BEFORE_20110722dfsg-3ubuntu1> sudo apt-mark hold foo2zjs

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

dnf --showduplicates list foo2zjs sudo dnf downgrade foo2zjs-<VERSION_BEFORE_20110722dfsg-3ubuntu1> sudo dnf versionlock add foo2zjs

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.

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-2011-2684?

foo2zjs: mitigate or apply the listed mitigation; foo2zjs: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-2684 being exploited?

CVE-2011-2684 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-2011-2684 affect?

CVE-2011-2684 affects foo2zjs, foo2zjs. Severity is medium (CVSS 5.5). foo2zjs before 20110722dfsg-3ubuntu1 as packaged in Ubuntu, 20110722dfsg-1 as packaged in Debian unstable, and 20090908dfsg-5.1+squeeze0 as packaged in Debian squeeze create temporary files insecurely, which allows local users to write over

How urgent is CVE-2011-2684?

Priority 33/100. On your watchlist

Software pages

Ubuntu vulnerabilities · Debian vulnerabilities

References

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