src_ip and dst_ip 0.0.0.0

[Николай Сеньков]

Hello,

In ossec agent log for same host (PDS2) alert for different event is not resolved srcip in ip or asset name

AV - Alert - "1542351904" --> RID: "5715"; RL: "3"; RG: "syslog,sshd,authentication_success,"; RC: "SSHD authentication success."; USER: "oracle"; SRCIP:"172.20.191.17"; HOSTNAME: "pds2"; LOCATION: "/var/log/auth.log"; EVENT: "[INIT]Nov 16 10:05:02 pds2 sshd[100563]: Accepted publickey for oracle from 172.20.191.17 port 61956 ssh2[END]"; 

AV - Alert - "1542351904" --> RID: "5501"; RL: "3"; RG: "pam,syslog,authentication_success,"; RC: "Login session opened."; USER: "None"; SRCIP: "None"; HOSTNAME: "pds2"; LOCATION: "/var/log/auth.log"; EVENT: "[INIT]Nov 16 10:05:02 pds2 sshd[100563]: pam_unix(sshd:session): session opened for user oracle by (uid=0)[END]"; 

2018-11-16 00:05:02,134 Detector [WARNING]: ssh[4003] Event's field dst_ip pds2 is not a valid IP.v4/IP.v6 address, falling back to default: 0.0.0.0

2018-11-16 00:05:02,135 Detector [WARNING]: ssh[4003] Event's device field pds2 is not a valid IP.v4/IP.v6 address, falling back to default local.

[dan (ddp)]

On Fri, Nov 16, 2018 at 4:12 AM Николай Сеньков
<nikolay...@gmail.com> wrote:
>
> Hello,
>
> In ossec agent log for same host (PDS2) alert for different event is not resolved srcip in ip or asset name
>
> AV - Alert - "1542351904" --> RID: "5715"; RL: "3"; RG: "syslog,sshd,authentication_success,"; RC: "SSHD authentication success."; USER: "oracle"; SRCIP:"172.20.191.17"; HOSTNAME: "pds2"; LOCATION: "/var/log/auth.log"; EVENT: "[INIT]Nov 16 10:05:02 pds2 sshd[100563]: Accepted publickey for oracle from 172.20.191.17 port 61956 ssh2[END]";
>

This one looks like it's parsing properly.,

> AV - Alert - "1542351904" --> RID: "5501"; RL: "3"; RG: "pam,syslog,authentication_success,"; RC: "Login session opened."; USER: "None"; SRCIP: "None"; HOSTNAME: "pds2"; LOCATION: "/var/log/auth.log"; EVENT: "[INIT]Nov 16 10:05:02 pds2 sshd[100563]: pam_unix(sshd:session): session opened for user oracle by (uid=0)[END]";
>

This one has no IP to parse, although there is a user.

Adding this after the pam decoder seems to work for me (but I haven't
made sure nothing else breaks):
<decoder name="pam-ssh">
<parent>pam</parent>
<prematch>^pam_unix\(sshd:\w+\): </prematch>
<regex offset="after_prematch">^session \w+ for user (\S+) </regex>
<order>user</order>
</decoder>

> 2018-11-16 00:05:02,134 Detector [WARNING]: ssh[4003] Event's field dst_ip pds2 is not a valid IP.v4/IP.v6 address, falling back to default: 0.0.0.0
>
> 2018-11-16 00:05:02,135 Detector [WARNING]: ssh[4003] Event's device field pds2 is not a valid IP.v4/IP.v6 address, falling back to default local.
>

There's no decoder for these at all. What are the log messages from?

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