Slackware Linux update for httpd
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 6 |
| CVE-ID | CVE-2019-10081 CVE-2019-10082 CVE-2019-10092 CVE-2019-10097 CVE-2019-10098 CVE-2019-9517 |
| CWE-ID | CWE-787 CWE-416 CWE-79 CWE-476 CWE-20 CWE-399 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #5 is available. |
| Vulnerable software Subscribe |
Slackware Linux Operating systems & Components / Operating system |
| Vendor | Slackware |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
1) Out-of-bounds write
EUVDB-ID: #VU20373
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2019-10081
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to perform denial of service attack.
The vulnerability exists due to a boundary error when processing HTTP/2 requests within the mod_http2 module, configured with "H2PushResource". A remote attacker can send specially crafted HTTP/2 requests to the affected server and perform denial of service (DoS) attack.
MitigationUpdate the affected package httpd.
Vulnerable software versionsSlackware Linux: 14.0 - 14.2
Fixed software versionsCPE2.3 External links
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.448035
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
2) Use-after-free
EUVDB-ID: #VU20386
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2019-10082
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the mod_http2 when handling connection shutdown. A remote attacker can send specially crafted requests to the affected server and make the mod_http2 to read memory that was already freed.
Mitigation
Update the affected package httpd.
Vulnerable software versionsSlackware Linux: 14.0 - 14.2
Fixed software versionsCPE2.3 External links
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.448035
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
3) Cross-site scripting
EUVDB-ID: #VU20384
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2019-10092
CWE-ID:
Exploit availability:
DescriptionThe disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data on the mod_proxy error page. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
MitigationUpdate the affected package httpd.
Vulnerable software versionsSlackware Linux: 14.0 - 14.2
Fixed software versionsCPE2.3 External links
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.448035
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
4) NULL pointer dereference
EUVDB-ID: #VU20385
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2019-10097
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing PROXY header within the mod_remoteip. A remote attacker that controls a trusted proxy server can send a specially crafted PROXY header, trigger stack overflow and perform a denial of service (DoS) attack.
MitigationUpdate the affected package httpd.
Vulnerable software versionsSlackware Linux: 14.0 - 14.2
Fixed software versionsCPE2.3 External links
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.448035
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
5) Input validation error
EUVDB-ID: #VU20374
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2019-10098
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to incorrect handling of encoded line break characters within rewrite rules. A remote attacker can send a specially crafted HTTP request and potentially bypass security restrictions.
Update the affected package httpd.
Vulnerable software versionsSlackware Linux: 14.0 - 14.2
Fixed software versionsCPE2.3 External links
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.448035
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
6) Resource management error
EUVDB-ID: #VU20340
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2019-9517
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect implementation of HTTP/2 protocol. A remote attacker can open the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both. MitigationUpdate the affected package httpd.
Vulnerable software versionsSlackware Linux: 14.0 - 14.2
Fixed software versionsCPE2.3 External links
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.448035
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
