NULL pointer dereference in openssl (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2009-1387
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openssl (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU45695

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-2009-1387

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the  dtls1_retrieve_buffered_fragment function in ssl/d1_both.c in OpenSSL. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack via an out-of-sequence DTLS handshake message, related to a "fragment bug.".

Mitigation

Install update from vendor's website.

Vulnerable software versions

openssl (Alpine package): 0.9.8l-r0 - 0.9.8l-r1

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=a83972c6ef8cc9fa9e47868248d78e48a4e92207
https://git.alpinelinux.org/aports/commit/?id=58c4a2ed5b63919fd9a7d78a14bd2b93eca96b05


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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