Ubuntu update for flac

1) Memory leak

EUVDB-ID: #VU12888

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6888

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the "read_metadata_vorbiscomment_()" function in src/libFLAC/stream_decoder.c due to memory leak. A remote attacker can trick the victim into opening a specially crafted FLAC file and cause the service to crash.

Mitigation

Update the affected package flac to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 22.04

libflac++6 (Ubuntu package): before Ubuntu Pro (Infra-only)

libflac8 (Ubuntu package): before Ubuntu Pro (Infra-only)

libflac++6v5 (Ubuntu package): before Ubuntu Pro (Infra-only)

flac (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-5733-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU69466

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0499

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to a boundary condition within the FLAC__bitreader_read_rice_signed_block() function in bitreader.c. A local user can trigger an out-of-bounds read error and gain access to sensitive information.

Mitigation

Update the affected package flac to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 22.04

libflac++6 (Ubuntu package): before Ubuntu Pro (Infra-only)

libflac8 (Ubuntu package): before Ubuntu Pro (Infra-only)

libflac++6v5 (Ubuntu package): before Ubuntu Pro (Infra-only)

flac (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-5733-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Out-of-bounds read

EUVDB-ID: #VU69342

Risk: Low

CVSSv3.1: 2.2 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0561

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local application to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the append_to_verify_fifo_interleaved_ in stream_encoder.c in Media Framework. A local application can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package flac to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 22.04

libflac++6 (Ubuntu package): before Ubuntu Pro (Infra-only)

libflac8 (Ubuntu package): before Ubuntu Pro (Infra-only)

libflac++6v5 (Ubuntu package): before Ubuntu Pro (Infra-only)

flac (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-5733-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.