Debian update for fontforge



Risk High
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2017-11568
CVE-2017-11569
CVE-2017-11571
CVE-2017-11572
CVE-2017-11574
CVE-2017-11575
CVE-2017-11576
CVE-2017-11577
CWE-ID CWE-126
CWE-121
CWE-122
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

Vendor Debian

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Heap-based buffer over-read

EUVDB-ID: #VU8102

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-2017-11568

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to heap-based buffer over-read in PSCharStringToSplines (psread.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Heap-based buffer over-read

EUVDB-ID: #VU8103

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-2017-11569

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to heap-based buffer over-read in readttfcopyrights (parsettf.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Stack-based buffer overflow

EUVDB-ID: #VU8105

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-2017-11571

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to stack-based buffer overflow in addnibble (parsettf.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Heap-based buffer over-read

EUVDB-ID: #VU8104

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-2017-11572

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to heap-based buffer over-read in readttfcopyrights (parsettf.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Heap-based buffer overflow

EUVDB-ID: #VU8106

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-2017-11574

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to heap-based buffer overflow in readcffset (parsettf.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Buffer over-read

EUVDB-ID: #VU8107

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-2017-11575

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to buffer over-read in strnmatch (char.c). A remote attacker can trick the victim into opening a specially crafted otf file, trigger call from the readttfcopyrights function in parsettf.c. and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Denial of service

EUVDB-ID: #VU8109

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-2017-11576

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to an error when ensuring a positive size in a weight vector memcpy call in readcfftopdict (parsettf.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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) Buffer over-read

EUVDB-ID: #VU8108

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-2017-11577

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to buffer over-read in getsid (parsettf.c). A remote attacker can trick the victim into opening a specially crafted otf file and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20120731.b-5+deb8u1, 1:20161005~dfsg-4+deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://github.com/fontforge/fontforge/issues/3123


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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