Amazon Linux AMI update for httpd24



Risk Medium
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2017-15710
CVE-2018-1301
CVE-2018-1302
CVE-2018-1303
CVE-2017-15715
CVE-2018-1283
CVE-2018-1312
CWE-ID CWE-787
CWE-125
CWE-476
CWE-264
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU11283

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-2017-15710

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The weakness exists in HTTPD mod_authnz_ldap due to improper validation of user-supplied input. A remote attacker can send a specially crafted Accept-Language header value, trigger an out-of-bounds memory write error and potentially cause the target service to crash.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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) Out-of-bounds read

EUVDB-ID: #VU11281

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-2018-1301

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The weakness exists due to improper validation of user-supplied input. A remote attacker can send a specially crafted HTTP request to trigger an out-of-bounds memory access error after a header size limit has been reached to cause the target service to crash.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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) Null pointer dereference

EUVDB-ID: #VU11287

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-2018-1302

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The weakness exists due to improper destruction of an HTTP/2 stream after being handled. A remote attacker can send a specially crafted HTTP/2 stream, write a NULL pointer value to an already freed memory space and cause the service to crash.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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) Out-of-bounds read

EUVDB-ID: #VU11280

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-2018-1303

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The weakness exists in Apache HTTPD mod_cache_socache due to improper validation of user-supplied input. A remote attacker can send a specially crafted HTTP request header, trigger an out-of-bounds memory read error in mod_cache_socache and cause the target service to crash.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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) Security restrictions bypass

EUVDB-ID: #VU11284

Risk: Low

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

CVE-ID: CVE-2017-15715

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists on systems that allow uploading of user-specified filenames due to the '<FilesMatch>' expression may not correctly match characters in a filename. A remote attacker can supply a specially crafted filename to potentially bypass security controls that use the '<FilesMatch>' directive.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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) Improper access control

EUVDB-ID: #VU11282

Risk: Low

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

CVE-ID: CVE-2018-1283

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to modify data on the target system.

The weakness exists on systems with mod_session configured with SessionEnv on to forward session data to CGI applications due to improper input validation. A remote attacker can send a specially crafted 'Session' header value to potentially modify mod_session data.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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) Security restrictions bypass

EUVDB-ID: #VU11279

Risk: Low

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

CVE-ID: CVE-2018-1312

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in Apache HTTPD mod_auth_digest due to improper generation of HTTP Digest authentication nonce. A remote attacker can replay HTTP requests across the cluster without detection by the target server(s) and bypass replay protection.

Mitigation

Update the affected packages.

i686:
    httpd24-debuginfo-2.4.33-2.78.amzn1.i686
    httpd24-2.4.33-2.78.amzn1.i686
    mod24_session-2.4.33-2.78.amzn1.i686
    mod24_md-2.4.33-2.78.amzn1.i686
    mod24_ssl-2.4.33-2.78.amzn1.i686
    httpd24-devel-2.4.33-2.78.amzn1.i686
    httpd24-tools-2.4.33-2.78.amzn1.i686
    mod24_proxy_html-2.4.33-2.78.amzn1.i686
    mod24_ldap-2.4.33-2.78.amzn1.i686

noarch:
    httpd24-manual-2.4.33-2.78.amzn1.noarch

src:
    httpd24-2.4.33-2.78.amzn1.src

x86_64:
    httpd24-devel-2.4.33-2.78.amzn1.x86_64
    httpd24-2.4.33-2.78.amzn1.x86_64
    mod24_ssl-2.4.33-2.78.amzn1.x86_64
    httpd24-debuginfo-2.4.33-2.78.amzn1.x86_64
    mod24_ldap-2.4.33-2.78.amzn1.x86_64
    mod24_proxy_html-2.4.33-2.78.amzn1.x86_64
    mod24_session-2.4.33-2.78.amzn1.x86_64
    mod24_md-2.4.33-2.78.amzn1.x86_64
    httpd24-tools-2.4.33-2.78.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2018-1004.html


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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