Ubuntu update for libwebp

1) Out-of-bounds read

EUVDB-ID: #VU53845

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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: #VU53846

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

3) Heap-based buffer overflow

EUVDB-ID: #VU53844

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

4) Out-of-bounds read

EUVDB-ID: #VU53847

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

5) Out-of-bounds read

EUVDB-ID: #VU53848

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

6) Use of Uninitialized Variable

EUVDB-ID: #VU53851

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

7) Heap-based buffer overflow

EUVDB-ID: #VU53843

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

8) Use-after-free

EUVDB-ID: #VU53842

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

9) Out-of-bounds read

EUVDB-ID: #VU53849

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

10) Out-of-bounds read

EUVDB-ID: #VU53850

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

11) Resource exhaustion

EUVDB-ID: #VU53852

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-36332

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in libwebp. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected package libwebp to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.04

libwebpdemux2 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebpmux3 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

libwebp6 (Ubuntu package): before 0.6.1-2ubuntu0.18.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-4971-1

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.

Risk	High
Patch available	YES
Number of vulnerabilities	11
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 CVE-2020-36332
CWE-ID	CWE-125 CWE-122 CWE-457 CWE-416 CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system libwebpdemux2 (Ubuntu package) Operating systems & Components / Operating system package or component libwebpmux3 (Ubuntu package) Operating systems & Components / Operating system package or component libwebp6 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.