Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2019-11555 |
CWE-ID | CWE-476 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
hostapd (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.
EUVDB-ID: #VU31083
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-11555
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c. A remote attacker can perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionshostapd (Alpine package): 2.0-r0 - 2.6-r3
External linkshttp://git.alpinelinux.org/aports/commit/?id=cd144136ad59f95ca2d962cbf6014b0378af8fd9
http://git.alpinelinux.org/aports/commit/?id=f1fd2a573425793de610a615092f210f1c50f0ad
http://git.alpinelinux.org/aports/commit/?id=031621e2cf39f9441cb620e4ebfb5261276e7978
http://git.alpinelinux.org/aports/commit/?id=3cd64c67f1c3365cc8ae201d0206327198d4b5a7
http://git.alpinelinux.org/aports/commit/?id=904e2d699295d64fe5097fc46a9c6719fe26dc7a
http://git.alpinelinux.org/aports/commit/?id=41b28e3b3b465fa8dab151dbe5e40975f014421b
http://git.alpinelinux.org/aports/commit/?id=4b95dd4491b9df33d3c835de96f56aa076b00de7
http://git.alpinelinux.org/aports/commit/?id=71e80d98081071b4d10324039fe65145316ec81c
http://git.alpinelinux.org/aports/commit/?id=5e5822d55734bcd1be8d9bd61f1360af2fd9459e
http://git.alpinelinux.org/aports/commit/?id=7da74780cb6ede70d4440b97f6a5878065b52889
http://git.alpinelinux.org/aports/commit/?id=8caec8957d86cbdfe758cbfba62dcb1b73514bc9
http://git.alpinelinux.org/aports/commit/?id=ef10b27afb6ce933891b3e0abf3f090f3e583900
http://git.alpinelinux.org/aports/commit/?id=43c8f8a8f1a15295d3639577e4b8d50292b28225
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.