Description
Net::CIDR::Set versions through 0.20 for Perl did not validate network masks.
The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks.
Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| RRWO | Net::CIDR::Set | ≤ 0.20 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libnet-cidr-set-perl | 0.21-1 | — |
| Debian 13 | libnet-cidr-set-perl | 0.15-1+deb13u1 | — |
| Debian 12 | libnet-cidr-set-perl | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libnet-cidr-set-perl | No fix yet | — |
| Ubuntu 26.04 LTS | libnet-cidr-set-perl | No fix yet | — |
| Ubuntu 25.10 | libnet-cidr-set-perl | No fix yet | — |
| Ubuntu 24.04 LTS | libnet-cidr-set-perl | No fix yet | — |
| Ubuntu 22.04 LTS | libnet-cidr-set-perl | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libnet-cidr-set-perl | No fix yet | — |