CVE-2017-17555: The swri_audio_convert function in audioconvert.c in FFmpeg libswresample through 3.0.101, as used in FFmpeg 3

Q: How do I fix CVE-2017-17555?

aubio: downgrade or apply the listed mitigation; ffmpeg: downgrade or apply the listed mitigation; libswresample: upgrade to newer than 3.0.101. Exact commands for each OS are on this page.

Q: Is CVE-2017-17555 being exploited?

CVE-2017-17555 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-2017-17555 affect?

CVE-2017-17555 affects aubio, ffmpeg, libswresample. Severity is medium (CVSS 6.5). The swri_audio_convert function in audioconvert.c in FFmpeg libswresample through 3.0.101, as used in FFmpeg 3.4.1, aubio 0.4.6, and other products, allows remote attackers to cause a denial of service (NULL pointer dereference and applicat

Q: How urgent is CVE-2017-17555?

Priority 39/100. No elevated risk signals yet.

Routine

MEDIUM 6.5DOWNGRADEDOWNGRADEUPGRADE

CVE-2017-17555 is a medium-severity flaw (CVSS 6.5) affecting aubio, ffmpeg, libswresample. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The swri_audio_convert function in audioconvert.c in FFmpeg libswresample through 3.0.101, as used in FFmpeg 3.4.1, aubio 0.4.6, and other products, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted audio file.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-476
Published	2017-12-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: aubio · ffmpeg

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-12-12 01:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

aubio aubio DOWNGRADE

Affected: 0.4.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.4.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.4.6 (Debian / Ubuntu)

apt-cache madison aubio sudo apt install aubio=<VERSION_BEFORE_0.4.6> sudo apt-mark hold aubio

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

dnf --showduplicates list aubio sudo dnf downgrade aubio-<VERSION_BEFORE_0.4.6> sudo dnf versionlock add aubio

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.

ffmpeg ffmpeg DOWNGRADE

Affected: 3.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.4.1 (Debian / Ubuntu)

apt-cache madison ffmpeg sudo apt install ffmpeg=<VERSION_BEFORE_3.4.1> sudo apt-mark hold ffmpeg

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

dnf --showduplicates list ffmpeg sudo dnf downgrade ffmpeg-<VERSION_BEFORE_3.4.1> sudo dnf versionlock add ffmpeg

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.

ffmpeg libswresample UPGRADE

Affected: <= 3.0.101

Fixed in: newer than 3.0.101

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.0.101 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libswresample

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-2017-17555?

aubio: downgrade or apply the listed mitigation; ffmpeg: downgrade or apply the listed mitigation; libswresample: upgrade to newer than 3.0.101. Exact commands for each OS are on this page.

Is CVE-2017-17555 being exploited?

CVE-2017-17555 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-2017-17555 affect?

CVE-2017-17555 affects aubio, ffmpeg, libswresample. Severity is medium (CVSS 6.5). The swri_audio_convert function in audioconvert.c in FFmpeg libswresample through 3.0.101, as used in FFmpeg 3.4.1, aubio 0.4.6, and other products, allows remote attackers to cause a denial of service (NULL pointer dereference and applicat

How urgent is CVE-2017-17555?

Priority 39/100. No elevated risk signals yet.

Software pages

FFmpeg vulnerabilities

Related CVEs

CVE-2018-19802 HIGH 7.5 UPGRADE aubio v0.4.0 to v0.4.8 has a new_aubio_onset NULL pointer dereference.
CVE-2018-19801 HIGH 7.5 UPGRADE aubio v0.4.0 to v0.4.8 has a NULL pointer dereference in new_aubio_filterbank via invalid n_filters.
CVE-2018-19800 CRITICAL 9.8 UPGRADE aubio v0.4.0 to v0.4.8 has a Buffer Overflow in new_aubio_tempo.
CVE-2018-14523 HIGH 8.8 DOWNGRADE MITIGATE An issue was discovered in aubio 0.4.6
CVE-2018-14522 HIGH 8.8 DOWNGRADE MITIGATE An issue was discovered in aubio 0.4.6

References

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