soroban-sdk has overflow in Bytes::slice, Vec::slice, GenRange::gen_range for u64
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 22.0.9, 23.5.1, 25.0.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
soroban-sdk is a Rust SDK for Soroban contracts. Arithmetic overflow can be triggered in the `Bytes::slice`, `Vec::slice`, and `Prng::gen_range` (for `u64`) methods in the `soroban-sdk` in versions up to and including `25.0.1`, `23.5.1`, and `25.0.2`. Contracts that pass user-controlled or computed range bounds to `Bytes::slice`, `Vec::slice`, or `Prng::gen_range` may silently operate on incorrect data ranges or generate random numbers from an unintended range, potentially resulting in corrupted contract state. Note that the best practice when using the `soroban-sdk` and building Soroban contracts is to always enable `overflow-checks = true`. The `stellar contract init` tool that prepares the boiler plate for a Soroban contract, as well as all examples and docs, encourage the use of configuring `overflow-checks = true` on `release` profiles so that these arithmetic operations fail rather than silently wrap. Contracts are only impacted if they use `overflow-checks = false` either explicitly or implicitly. It is anticipated the majority of contracts could not be impacted because the best practice encouraged by tooling is to enable `overflow-checks`. The fix available in `25.0.1`, `23.5.1`, and `25.0.2` replaces bare arithmetic with `checked_add` / `checked_sub`, ensuring overflow traps regardless of the `overflow-checks` profile setting. As a workaround, contract workspaces can be configured with a profile available in the GitHub Securtity Advisory to enable overflow checks on the arithmetic operations. This is the best practice when developing Soroban contracts, and the default if using the contract boilerplate generated using `stellar contract init`. Alternatively, contracts can validate range bounds before passing them to `slice` or `gen_range` to ensure the conversions cannot overflow.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- stellar rs-soroban-sdk
fixed in 22.0.9; From 23.0.0 · fixed in 23.5.1; From 25.0.0 · fixed in 25.0.2
- soroban-sdkcrates.io
From 25.0.0 · fixed in 25.0.2
- soroban-sdkcrates.io
From 23.0.0 · fixed in 23.5.1
- soroban-sdkcrates.io
fixed in 22.0.9