Ubuntu update for libwebp



Risk High
Patch available YES
Number of vulnerabilities 10
CVE-ID CVE-2018-25009
CVE-2018-25010
CVE-2018-25011
CVE-2018-25012
CVE-2018-25013
CVE-2018-25014
CVE-2020-36328
CVE-2020-36329
CVE-2020-36330
CVE-2020-36331
CWE-ID CWE-125
CWE-122
CWE-457
CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

libwebpmux1 (Ubuntu package)
Operating systems & Components / Operating system package or component

libwebpdemux1 (Ubuntu package)
Operating systems & Components / Operating system package or component

libwebp5 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 10 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU53845

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25009

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the WebPMuxCreateInternal() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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: #VU53846

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25010

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the ApplyFilter() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

3) Heap-based buffer overflow

EUVDB-ID: #VU53844

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25011

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in PutLE16() function in libwebp.  A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

4) Out-of-bounds read

EUVDB-ID: #VU53847

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25012

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the WebPMuxCreateInternal() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

5) Out-of-bounds read

EUVDB-ID: #VU53848

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25013

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the ShiftBytes() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

6) Use of Uninitialized Variable

EUVDB-ID: #VU53851

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25014

CWE-ID: CWE-457 - Use of Uninitialized Variable

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to usage of unitialized variable in the ReadSymbol() function in libwebp. A remote attacker can trick the victim to open a specially crated file and execute arbitrary code on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

7) Heap-based buffer overflow

EUVDB-ID: #VU53843

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-36328

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in WebPDecodeRGBInto function in libwebp.  A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

8) Use-after-free

EUVDB-ID: #VU53842

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-36329

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in libwebp. A remote attacker can trick the victim to open a specially crafted file, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

9) Out-of-bounds read

EUVDB-ID: #VU53849

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-36330

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the ChunkVerifyAndAssign() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.

10) Out-of-bounds read

EUVDB-ID: #VU53850

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-36331

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the ChunkAssignData() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

libwebpmux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebpdemux1 (Ubuntu package): before 0.4.41u buntu0.1~esm1

libwebp5 (Ubuntu package): before 0.4.41u buntu0.1~esm1

CPE2.3 External links

http://ubuntu.com/security/notices/USN-4971-2


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.



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