Description
A vulnerability was determined in seladb PcapPlusPlus 25.05. The impacted element is the function pcpp::SSLClientHelloMessage::getHandshakeVersion of the file Packet++/src/SSLHandshake.cpp of the component TLS Hello Handler. Executing a manipulation of the argument handshakeVersion can lead to heap-based buffer overflow. It is possible to launch the attack remotely. This attack is characterized by high complexity. The exploitability is regarded as difficult. The exploit has been publicly disclosed and may be utilized. This patch is called 98e671010bc7c87b95898c22ae289220ae92542b. It is best practice to apply a patch to resolve this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| seladb | PcapPlusPlus | 25.05 | — |
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.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pcapplusplus | 26.07-1.1 | openSUSE-SU-2026:11883-1 |
| openSUSE Leap 16.0 | pcapplusplus | 26.07-bp160.1.1 | openSUSE-SU-2026:22017-1 |
Advisories 2
- openSUSE-SU-2026:22017-1 Security update for pcapplusplus SUSE / openSUSE Security Updates · Oct 3, 2026
- openSUSE-SU-2026:11883-1 pcapplusplus-devel-26.07-1.1 on GA media SUSE / openSUSE Security Updates · Sep 25, 2026
References
- VDB-374591 | seladb PcapPlusPlus TLS Hello SSLHandshake.cpp getHandshakeVersion heap-based overflow vdb-entry technical-description
- VDB-374591 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-13588 | CVE Analysis and Report third-party-advisory
- Submit #844481 | PcapPlusPlus v25.05 Heap-based Buffer Overflow third-party-advisory
- https://github.com/seladb/PcapPlusPlus/issues/2151 issue-tracking
- https://github.com/seladb/PcapPlusPlus/pull/2161 issue-tracking patch
- https://github.com/user-attachments/files/28213479/poc.zip exploit
- https://github.com/seladb/PcapPlusPlus/commit/98e671010bc7c87b95898c22ae289220ae92542b patch
- https://github.com/seladb/PcapPlusPlus/ product