Bug#884735: libsndfile: CVE-2017-17456 CVE-2017-17457

[Salvatore Bonaccorso]

Source: libsndfile
Version: 1.0.28-4
Severity: important
Tags: security upstream
Forwarded: https://github.com/erikd/libsndfile/issues/344

Hi,

the following vulnerabilities were published for libsndfile.

CVE-2017-17456[0]:
| The function d2alaw_array() in alaw.c of libsndfile 1.0.29pre1 may lead
| to a remote DoS attack (SEGV on unknown address 0x000000000000), a
| different vulnerability than CVE-2017-14245.

CVE-2017-17457[1]:
| The function d2ulaw_array() in ulaw.c of libsndfile 1.0.29pre1 may lead
| to a remote DoS attack (SEGV on unknown address 0x000000000000), a
| different vulnerability than CVE-2017-14246.

Note, as mentioned in the CVE assingments, that are different from
CVE-2017-14245 and CVE-2017-14246, crash poc files are attaced to
upstream bug report and demostrable with e.g. an ASAN build of
libsndfile.

If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-17456
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17456
[1] https://security-tracker.debian.org/tracker/CVE-2017-17457
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17457

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore