Multiple vulnerabilities in Mozilla Firefox

Published: 2019-02-13 | Updated: 2019-02-13
Severity High
Patch available YES
Number of vulnerabilities 3
CVE ID CVE-2018-18356
CVE-2019-5785
CVE-2018-18511
CWE ID CWE-416
CWE-190
CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software Mozilla Firefox Subscribe
Vendor Mozilla

Security Advisory

1) Use-after-free error

Severity: Low

CVSSv3: 5.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-18356

CWE-ID: CWE-416 - Use After Free

Description

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

The weakness exists due to use-after-free error in Skia when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and cause the browser to crash.

Mitigation

Update to version 65.0.1.

Vulnerable software versions

Mozilla Firefox: 60.0, 60.0.2, 61.0, 61.0.1, 61.0.2, 62.0, 62.0.1, 62.0.2, 62.0.3, 63.0, 64.0, 64.0.1, 64.0.2, 65.0

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2019-04/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

2) Integer overflow

Severity: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-5785

CWE-ID: CWE-190 - Integer Overflow or Wraparound

Description

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

The vulnerability exists due to integer overflow in the Skia library. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger integer overflow and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 60.0, 60.0.2, 61.0, 61.0.1, 61.0.2, 62.0, 62.0.1, 62.0.2, 62.0.3, 63.0, 64.0, 64.0.1, 64.0.2, 65.0

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2019-04/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

3) Permissions, Privileges, and Access Controls

Severity: Low

CVSSv3: 4.1 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2018-18511

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Description

The vulnerability allows a remote attacker to bypass same-origin policy.

The vulnerability exists due to an error when processing canvas elements with transferFromImageBitmap method. A remote attacker can create a specially crafted website, trick the victim into visiting it, bypass cross-origin policy and view images loaded in other browser tabs.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 60.0, 60.0.2, 61.0, 61.0.1, 61.0.2, 62.0, 62.0.1, 62.0.2, 62.0.3, 63.0, 64.0, 64.0.1, 64.0.2, 65.0

CPE External links

https://www.mozilla.org/en-US/security/advisories/mfsa2019-04/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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