Slackware Linux update for gd



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-6362
CVE-2017-7890
CWE-ID CWE-415
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Slackware Linux
Operating systems & Components / Operating system

Vendor Slackware

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Double free memory error

EUVDB-ID: #VU12094

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-6362

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

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

The weakness exists due to double free memory error in the gdImagePngPtr function. A remote attacker can submit vectors related to a palette with no colors and cause the service to crash.

Mitigation

Update the affected package gd.

Vulnerable software versions

Slackware Linux: 14.2

CPE2.3 External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.341792


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) Information disclosure

EUVDB-ID: #VU11789

Risk: Low

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

CVE-ID: CVE-2017-7890

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists in the GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c due to it does not zero colorMap arrays before use. A remote attacker can trick the victim into opening a specially crafted GIF image that could use the uninitialized tables to read ~700 bytes from the top of the stack and gain access to potentially sensitive information.

Mitigation

Update the affected package gd.

Vulnerable software versions

Slackware Linux: 14.2

CPE2.3 External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.341792


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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