CVE-2011-4612: icecast before 2.3.3 allows remote attackers to inject control characters such as newlines into the error loc

Q: How do I fix CVE-2011-4612?

icecast: upgrade to newer than 2.3.2. Exact commands for each OS are on this page.

Q: Is CVE-2011-4612 being exploited?

CVE-2011-4612 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2011-4612 affect?

CVE-2011-4612 affects icecast. Severity is medium (CVSS 5.0). icecast before 2.3.3 allows remote attackers to inject control characters such as newlines into the error loc (error.log) via a crafted URL.

Q: How urgent is CVE-2011-4612?

Priority 38/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2011-4612 is a medium-severity flaw (CVSS 5.0) affecting icecast. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

icecast before 2.3.3 allows remote attackers to inject control characters such as newlines into the error loc (error.log) via a crafted URL.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Weakness	CWE-20
Published	2012-11-20
Last modified	2026-06-16

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

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

Am I affected?

Timeline

2012-11-20 00:55 UTCPublished CVE record published
2026-06-16 23:35 UTCUpdated Record last modified

xiph icecast UPGRADE

Affected: <= 2.3.2

Fixed in: newer than 2.3.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.3.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade icecast

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade icecast

Note

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

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-2011-4612?

icecast: upgrade to newer than 2.3.2. Exact commands for each OS are on this page.

Is CVE-2011-4612 being exploited?

CVE-2011-4612 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-2011-4612 affect?

CVE-2011-4612 affects icecast. Severity is medium (CVSS 5.0). icecast before 2.3.3 allows remote attackers to inject control characters such as newlines into the error loc (error.log) via a crafted URL.

How urgent is CVE-2011-4612?

Priority 38/100. No elevated risk signals yet.

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References

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