CVE-2012-6303: Heap-based buffer overflow in the GetWavHeader function in generic/jkSoundFile.c in the Snack Sound Toolkit, a

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MEDIUM 6.8DOWNGRADEDOWNGRADEMITIGATE

CVE-2012-6303 is a medium-severity flaw (CVSS 6.8) affecting snack sound toolkit, wavesurfer, opensuse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based buffer overflow in the GetWavHeader function in generic/jkSoundFile.c in the Snack Sound Toolkit, as used in WaveSurfer 1.8.8p4, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large chunk size in a WAV file.

Why this priority

EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	10.2% (top 4%)
CISA exploited list	No
Weakness	CWE-119
Published	2013-10-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kth · opensuse

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

Am I affected?

Timeline

2013-10-28 22:55 UTCPublished CVE record published
2026-06-16 23:47 UTCUpdated Record last modified

kth snack sound toolkit DOWNGRADE

Affected: 2.2.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.10

1. Check installed version

apt-cache policy snack-sound-toolkit || rpm -q snack-sound-toolkit || snack-sound-toolkit --version

2. No fixed release: DOWNGRADE to a release before 2.2.10 (Debian / Ubuntu)

apt-cache madison snack-sound-toolkit sudo apt install snack-sound-toolkit=<VERSION_BEFORE_2.2.10> sudo apt-mark hold snack-sound-toolkit

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

dnf --showduplicates list snack-sound-toolkit sudo dnf downgrade snack-sound-toolkit-<VERSION_BEFORE_2.2.10> sudo dnf versionlock add snack-sound-toolkit

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.

kth wavesurfer DOWNGRADE

Affected: 1.8.8 p4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.8.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.8.8 (Debian / Ubuntu)

apt-cache madison wavesurfer sudo apt install wavesurfer=<VERSION_BEFORE_1.8.8> sudo apt-mark hold wavesurfer

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

dnf --showduplicates list wavesurfer sudo dnf downgrade wavesurfer-<VERSION_BEFORE_1.8.8> sudo dnf versionlock add wavesurfer

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.

opensuse opensuse MITIGATE

Affected: 13.1 · 13.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.1

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.

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: WaveSurfer 1.8.8p4 - Memory Corruption (PoC)

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-2012-6303?

snack sound toolkit: downgrade or apply the listed mitigation; wavesurfer: downgrade or apply the listed mitigation; opensuse: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-6303 being exploited?

CVE-2012-6303 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-2012-6303 affect?

CVE-2012-6303 affects snack sound toolkit, wavesurfer, opensuse. Severity is medium (CVSS 6.8). Heap-based buffer overflow in the GetWavHeader function in generic/jkSoundFile.c in the Snack Sound Toolkit, as used in WaveSurfer 1.8.8p4, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via

How urgent is CVE-2012-6303?

Priority 53/100. EPSS top 4%: very likely to be exploited; Public exploit reference

References

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