CVE-2019-3832 describes a buffer read vulnerability discovered in the libsndfile library. This flaw allows a local attacker to trigger an application crash by exploiting a weakness in the wavwriteheader() function, a consequence of an incomplete fix addressing CVE-2018-19758. Affected versions include those prior to a patch release, specifically versions less than or equal to NA. Mitigation strategies focus on upgrading to a patched version of libsndfile when available.
The primary impact of CVE-2019-3832 is denial of service (DoS). An attacker can exploit this vulnerability to crash the application utilizing libsndfile. While data exfiltration is not directly possible through this buffer read, a crash can disrupt service and potentially lead to further exploitation if the application is critical. The blast radius is limited to the application using libsndfile and the local attacker's ability to trigger the vulnerability. Successful exploitation requires local access to the system running the vulnerable application.
CVE-2019-3832 was publicly disclosed on March 20, 2019. There is no indication of active exploitation campaigns targeting this vulnerability. It is not listed on the CISA KEV catalog. Public proof-of-concept exploits are not widely available, suggesting a relatively low probability of exploitation in the wild.
Exploit Status
EPSS
0.10% (29% percentile)
CVSS Vector
The recommended mitigation for CVE-2019-3832 is to upgrade to a patched version of libsndfile. Since a specific fixed version is not provided, it's crucial to consult the libsndfile project's website or security advisories for the latest release. In the absence of an immediate upgrade, consider implementing input validation on WAV files processed by the application to prevent malformed headers from being parsed. While a WAF or proxy is unlikely to directly mitigate this vulnerability, careful monitoring of application crashes and error logs can help detect potential exploitation attempts.
Update the libsndfile library to a corrected version that includes the complete fix for vulnerability CVE-2018-19758. This will prevent buffer out-of-bounds reads in the wav_write_header() function and prevent potential application crashes. See the release notes for specific details about the fix.
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CVE-2019-3832 is a LOW severity buffer read vulnerability in the libsndfile library, stemming from an incomplete fix for CVE-2018-19758. It allows a local attacker to crash an application processing WAV files.
You are affected if your application uses libsndfile and is running a version less than or equal to NA. Check your libsndfile version and upgrade if necessary.
Upgrade to a patched version of libsndfile. Consult the libsndfile project's website or security advisories for the latest release.
There is no indication of active exploitation campaigns targeting CVE-2019-3832 at this time.
Refer to the libsndfile project's website and security advisories for information related to CVE-2019-3832.
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