Description
The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.
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 | libemail-address-list-perl | 0.06-1 | — |
| Debian 13 | libemail-address-list-perl | 0.06-1 | — |
| Debian 12 | libemail-address-list-perl | 0.06-1 | — |
| Debian 8 | libemail-address-list-perl | 0.05-1+deb8u1 | DLA-2101-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libemail-address-list-perl | 0.06-1 | — |
| Ubuntu 18.04 LTS | libemail-address-list-perl | 0.05-1+deb9u1build0.18.04.1 | USN-4517-1 |
| Ubuntu 16.04 LTS | libemail-address-list-perl | 0.05-1+deb9u1build0.16.04.1 | USN-4517-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.23 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.22 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.21 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.20 | perl-email-address-list | 0.06-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.18 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.17 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.16 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.15 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.14 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.13 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.12 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.11 | perl-email-address-list | 0.06-r0 | — |
| Alpine v3.10 | perl-email-address-list | 0.06-r0 | — |
Advisories 2
- DLA-2101-1 libemail-address-list-perl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-4517-1 libemail-address-list-perl vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
References
- FEDORA-2019-73cbc02e14 vendor-advisory
- FEDORA-2019-ef5551fcff vendor-advisory
- https://bestpractical.com/download-page
- [debian-lts-announce] 20200212 [SECURITY] [DLA 2101-1] libemail-address-list-perl security update mailing-list
- USN-4517-1 vendor-advisory