CVE-2011-3617: Tahoe-LAFS v1.3.0 through v1.8.2 could allow unauthorized users to delete immutable files in some cases.

This month

MEDIUM 6.5WATCHLISTUPGRADEMITIGATE

CVE-2011-3617 is a medium-severity flaw (CVSS 6.5) affecting tahoe-lafs, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tahoe-LAFS v1.3.0 through v1.8.2 could allow unauthorized users to delete immutable files in some cases.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-863
Published	2019-11-26
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: debian · tahoe-lafs

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

Am I affected?

Timeline

2019-11-26 03:15 UTCPublished CVE record published
2026-06-16 23:33 UTCUpdated Record last modified

tahoe-lafs tahoe-lafs UPGRADE

Affected: >= 1.3.0 and <= 1.8.2

Fixed in: newer than 1.8.2

Safe to downgrade to: a release before 1.3.0

1. Check installed version

apt-cache policy tahoe-lafs || rpm -q tahoe-lafs || tahoe-lafs --version

2. UPGRADE to newer than 1.8.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tahoe-lafs

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tahoe-lafs

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.3.0 (Debian / Ubuntu)

apt-cache madison tahoe-lafs sudo apt install tahoe-lafs=<VERSION_BEFORE_1.3.0> sudo apt-mark hold tahoe-lafs

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tahoe-lafs sudo dnf downgrade tahoe-lafs-<VERSION_BEFORE_1.3.0> sudo dnf versionlock add tahoe-lafs

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.

debian debian linux MITIGATE

Affected: 8.0 · 9.0 · 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2011-3617?

tahoe-lafs: upgrade to newer than 1.8.2; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-3617 being exploited?

CVE-2011-3617 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-2011-3617 affect?

CVE-2011-3617 affects tahoe-lafs, debian linux. Severity is medium (CVSS 6.5). Tahoe-LAFS v1.3.0 through v1.8.2 could allow unauthorized users to delete immutable files in some cases.

How urgent is CVE-2011-3617?

Priority 44/100. On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2012-0051 HIGH 7.4 DOWNGRADE MITIGATE Tahoe-LAFS 1.9.0 fails to ensure integrity which allows remote attackers to corrupt mutable files or directori

References

← Back to latest CVEs