Slackware Linux update for httpd



| Updated: 2017-07-17
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-9789
CVE-2017-9788
CWE-ID CWE-416
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) Use-after-free error

EUVDB-ID: #VU7518

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-9789

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The weakness exists due to use-after-free condition in the mod_http2 function. A remote attacker can trigger memory corruption and cause the server to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update the affected package httpd.

Vulnerable software versions

Slackware Linux: 13.0 - 14.2

CPE2.3 External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2017&m=slackware-security.560479


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: #VU7517

Risk: Low

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

CVE-ID: CVE-2017-9788

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to obtain potentially sensitive information on the targeted system.

The weakness exists due to improper initialization of the value placeholder in [Proxy-]Authorization headers of type 'Digest' before or between successive key=value assignments by mod_auth_digest. A remote attacker can provide an initial key with no '=' assignment to cause the stale value of uninitialized pool memory used by the prior request to leak.

Successful exploitation of the vulnerability results in information disclosure.

Mitigation

Update the affected package httpd.

Vulnerable software versions

Slackware Linux: 13.0 - 14.2

CPE2.3 External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2017&m=slackware-security.560479


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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