The sbr_make_f_master function in aacsbr.c in Libav 11.7 allows remote attackers to cause a denial of service (divide-by-zero error and appl
The sbr_make_f_master function in aacsbr.c in Libav 11.7 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted mp3 file.
- Published
- Feb 15, 2017
- Updated
- Jun 16, 2026
- EPSS
- 1.4% · 72th percentile
- CWE
- CWE-369
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| libav | libav | cpe:2.3:a:libav:libav |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- libav libav11.7
Same product
libav: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-3984Multiple unspecified vulnerabilities in Libav before 0.8.12 allow remote attackers to have unknown impact and vectors.41Plan
- CVE-2012-5144Google Chrome before 23.0.1271.97, and Libav 0.7.x before 0.7.7 and 0.8.x before 0.8.5, do not properly perform AAC decoding, which allows r41Plan
- CVE-2012-2804Unspecified vulnerability in libavcodec/indeo3.c in FFmpeg before 0.11 and Libav 0.8.x before 0.8.5 has unknown impact and attack vectors, r41Plan
- CVE-2012-2803Double free vulnerability in the mpeg_decode_frame function in libavcodec/mpeg12.c in FFmpeg before 0.11, and Libav 0.7.x before 0.7.7 and 041Plan
- CVE-2012-2802Unspecified vulnerability in the ac3_decode_frame function in libavcodec/ac3dec.c in FFmpeg before 0.11 and Libav 0.8.x before 0.8.4 has unk41Plan
- CVE-2012-2801Unspecified vulnerability in libavcodec/avs.c in FFmpeg before 0.11, and Libav 0.7.x before 0.7.7 and 0.8.x before 0.8.4, has unknown impact41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-369 · Divide By ZeroCVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.openwall.com/lists/oss-security/2016/09/21/9
- www.securityfocus.com/bid/93102
- blogs.gentoo.org/ago/2016/09/21/libav-divide-by-zero-in-sbr_make_f_master-aacsbr-c/
- git.libav.org/?p=libav.git%3Ba=blobdiff%3Bf=libavcodec/aacsbr.c%3Bh=7d156e525b40b197c38db17acf16730845b91e56%3Bhp=dbfb1677813ce6c531e4362d0be7ccf9fdfdd28e%3Bhb=a50a5ff29ec5a8243499769e2bb9b5509ce9fd52%3Bhpb=f55e3ff5891daf3d538b4d9176371960200d68fa
Vendor advisories and official records. Exploit/PoC links are deliberately left out.